diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AccountService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AccountService.kt
index 9afbc43..1bb3a0f 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AccountService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AccountService.kt
@@ -10,9 +10,13 @@ import reactor.core.publisher.Mono
 
 interface AccountService : IService<Account>, ReactiveUserDetailsService {
     fun findAccountByNameOrEmail(text: String): Mono<Account>
-    fun askEmailVerifyCode(type: String, email: String, ip: String): Mono<String>
-    fun registerEmailAccount(vo: EmailRegisterVO): Mono<String>
-    fun resetEmailAccountPassword(vo: PasswordResetVO): Mono<String>
-    fun invalidateJwt(headerToken: String?): Boolean
-    fun jwtTokenRelogin(headerToken: String?): Mono<ReloginVO>?
+    fun findAccountByName(username: String): Mono<Account>
+    fun findAccountByEmail(email: String): Mono<Account>
+    fun existAccountByName(username: String): Mono<Boolean>
+    fun existAccountByEmail(email: String): Mono<Boolean>
+    fun resetPasswordByEmail(email: String, encodedPassword: String): Mono<Void>
+
+//    fun batchInsert(accounts: List<Account>): Mono<Boolean>
+//    fun replaceAll(accounts: List<Account>): Mono<Boolean>
+//    fun exportAll(): Mono<List<Account>>
 }
\ No newline at end of file
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt
index c0249ec..0282736 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/AttachmentService.kt
@@ -2,5 +2,14 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Attachment
+import reactor.core.publisher.Mono
 
-interface AttachmentService : IService<Attachment>
+interface AttachmentService : IService<Attachment> {
+    fun getAttachmentById(id: Long): Mono<Attachment>
+    fun listByRelated(relatedTable: String, relatedId: Long): Mono<List<Attachment>>
+    fun listByUploader(uploadedBy: Long): Mono<List<Attachment>>
+    fun createAttachment(attachment: Attachment): Mono<Boolean>
+    fun deleteAttachment(id: Long): Mono<Boolean>
+    fun deleteByRelated(relatedTable: String, relatedId: Long): Mono<Boolean>
+    fun exportAllAttachments(): Mono<List<Attachment>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt
index 0c48c56..2ff8617 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/BorrowRecordService.kt
@@ -2,5 +2,16 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.BorrowRecord
+import reactor.core.publisher.Mono
 
-interface BorrowRecordService : IService<BorrowRecord>
+interface BorrowRecordService : IService<BorrowRecord> {
+    fun getBorrowRecordById(id: Long): Mono<BorrowRecord>
+    fun listByItem(itemId: Long): Mono<List<BorrowRecord>>
+    fun listByBorrower(borrowerId: Long): Mono<List<BorrowRecord>>
+    fun listByStatus(status: String): Mono<List<BorrowRecord>>
+    fun listOverdueRecords(): Mono<List<BorrowRecord>>
+    fun createBorrowRecord(record: BorrowRecord): Mono<Boolean>
+    fun updateBorrowRecord(record: BorrowRecord): Mono<Boolean>
+    fun deleteBorrowRecord(id: Long): Mono<Boolean>
+    fun exportAllBorrowRecords(): Mono<List<BorrowRecord>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt
index 52e7421..7446342 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/CategoryService.kt
@@ -2,5 +2,14 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Category
+import reactor.core.publisher.Mono
 
-interface CategoryService : IService<Category>
+interface CategoryService : IService<Category> {
+    fun getCategoryById(id: Long): Mono<Category>
+    fun listAllCategories(): Mono<List<Category>>
+    fun listByParentId(parentId: Long): Mono<List<Category>>
+    fun createCategory(category: Category): Mono<Boolean>
+    fun updateCategory(category: Category): Mono<Boolean>
+    fun deleteCategory(id: Long): Mono<Boolean>
+    fun exportAllCategories(): Mono<List<Category>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt
index e3eec2c..f8221d1 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/DepartmentService.kt
@@ -2,5 +2,14 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Department
+import reactor.core.publisher.Mono
 
-interface DepartmentService : IService<Department>
+interface DepartmentService : IService<Department> {
+    fun getDepartmentById(id: Long): Mono<Department>
+    fun listAllDepartments(): Mono<List<Department>>
+    fun listByParentId(parentId: Long): Mono<List<Department>>
+    fun createDepartment(department: Department): Mono<Boolean>
+    fun updateDepartment(department: Department): Mono<Boolean>
+    fun deleteDepartment(id: Long): Mono<Boolean>
+    fun exportAllDepartments(): Mono<List<Department>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt
index 056e44d..3e21afe 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EmailNoticeService.kt
@@ -2,5 +2,15 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.EmailNotice
+import reactor.core.publisher.Mono
 
-interface EmailNoticeService : IService<EmailNotice>
+interface EmailNoticeService : IService<EmailNotice> {
+    fun getEmailNoticeById(id: Long): Mono<EmailNotice>
+    fun listAllNotices(): Mono<List<EmailNotice>>
+    fun listEnabledNotices(): Mono<List<EmailNotice>>
+    fun createEmailNotice(notice: EmailNotice): Mono<Boolean>
+    fun updateEmailNotice(notice: EmailNotice): Mono<Boolean>
+    fun deleteEmailNotice(id: Long): Mono<Boolean>
+    fun toggleEnabled(id: Long): Mono<Boolean>
+    fun exportAllEmailNotices(): Mono<List<EmailNotice>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt
index 54b0934..ac1bcb8 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/EvaluationService.kt
@@ -2,5 +2,16 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Evaluation
+import reactor.core.publisher.Mono
 
-interface EvaluationService : IService<Evaluation>
+interface EvaluationService : IService<Evaluation> {
+    fun getEvaluationById(id: Long): Mono<Evaluation>
+    fun listByEvaluator(evaluatorId: Long): Mono<List<Evaluation>>
+    fun listByRelatedItem(itemId: Long): Mono<List<Evaluation>>
+    fun listByScore(score: Short): Mono<List<Evaluation>>
+    fun createEvaluation(evaluation: Evaluation): Mono<Boolean>
+    fun updateEvaluation(evaluation: Evaluation): Mono<Boolean>
+    fun deleteEvaluation(id: Long): Mono<Boolean>
+    fun deleteByEvaluator(evaluatorId: Long): Mono<Boolean>
+    fun exportAllEvaluations(): Mono<List<Evaluation>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt
index d383e34..eca6510 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/FinanceRecordService.kt
@@ -2,5 +2,16 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.FinanceRecord
+import reactor.core.publisher.Mono
 
-interface FinanceRecordService : IService<FinanceRecord>
+interface FinanceRecordService : IService<FinanceRecord> {
+    fun getFinanceRecordById(id: Long): Mono<FinanceRecord>
+    fun listByType(type: String): Mono<List<FinanceRecord>>
+    fun listByDateRange(start: String, end: String): Mono<List<FinanceRecord>>
+    fun listByVendor(vendor: String): Mono<List<FinanceRecord>>
+    fun listByRelatedItem(itemId: Long): Mono<List<FinanceRecord>>
+    fun createFinanceRecord(record: FinanceRecord): Mono<Boolean>
+    fun updateFinanceRecord(record: FinanceRecord): Mono<Boolean>
+    fun deleteFinanceRecord(id: Long): Mono<Boolean>
+    fun exportAllFinanceRecords(): Mono<List<FinanceRecord>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt
index 43b8863..448675c 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemService.kt
@@ -1,6 +1,23 @@
 package club.itstudio.itmanager.service
 
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Item
+import reactor.core.publisher.Mono
 
-interface ItemService : IService<Item>
+interface ItemService : IService<Item> {
+    fun pageItems(page: Page<Item>, keyword: String?, status: String?): Mono<Page<Item>>
+    fun getItemById(id: Long): Mono<Item>
+    fun listAvailableItems(): Mono<List<Item>>
+    fun listInUseItems(): Mono<List<Item>>
+    fun listItemsByCategory(categoryId: Long): Mono<List<Item>>
+    fun createItem(item: Item): Mono<Boolean>
+    fun updateItem(item: Item): Mono<Boolean>
+    fun removeItemById(id: Long): Mono<Boolean>
+    fun setPrimaryImage(id: Long, imagePath: String): Mono<Boolean>
+    fun borrowItem(id: Long, quantity: Int): Mono<Boolean>
+    fun returnItem(id: Long, quantity: Int): Mono<Boolean>
+    fun batchInsertItems(items: List<Item>): Mono<Boolean>
+    fun replaceAllItems(items: List<Item>): Mono<Boolean>
+    fun exportAllItems(): Mono<List<Item>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt
index befd743..88d5404 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/ItemTransactionService.kt
@@ -2,5 +2,15 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.ItemTransaction
+import reactor.core.publisher.Mono
 
-interface ItemTransactionService : IService<ItemTransaction>
+interface ItemTransactionService : IService<ItemTransaction> {
+    fun getTransactionById(id: Long): Mono<ItemTransaction>
+    fun listByItem(itemId: Long): Mono<List<ItemTransaction>>
+    fun listByType(transType: String): Mono<List<ItemTransaction>>
+    fun listByOperator(operatorId: Long): Mono<List<ItemTransaction>>
+    fun createTransaction(transaction: ItemTransaction): Mono<Boolean>
+    fun updateTransaction(transaction: ItemTransaction): Mono<Boolean>
+    fun deleteTransaction(id: Long): Mono<Boolean>
+    fun exportAllTransactions(): Mono<List<ItemTransaction>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt
index e3f28b5..ab7003c 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/MemoService.kt
@@ -2,5 +2,16 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Memo
+import reactor.core.publisher.Mono
 
-interface MemoService : IService<Memo>
+interface MemoService : IService<Memo> {
+    fun getMemoById(id: Long): Mono<Memo>
+    fun searchMemos(keyword: String?): Mono<List<Memo>>
+    fun listByAuthor(authorId: Long): Mono<List<Memo>>
+    fun listByRelatedItem(itemId: Long): Mono<List<Memo>>
+    fun listPublicMemos(): Mono<List<Memo>>
+    fun createMemo(memo: Memo): Mono<Boolean>
+    fun updateMemo(memo: Memo): Mono<Boolean>
+    fun deleteMemo(id: Long): Mono<Boolean>
+    fun exportAllMemos(): Mono<List<Memo>>
+}
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt
index becdf3b..fa3c44c 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/service/PersonnelService.kt
@@ -2,5 +2,16 @@ package club.itstudio.itmanager.service
 
 import com.baomidou.mybatisplus.extension.service.IService
 import club.itstudio.itmanager.entity.dto.Personnel
+import reactor.core.publisher.Mono
 
-interface PersonnelService : IService<Personnel>
+interface PersonnelService : IService<Personnel> {
+    fun getPersonnelById(id: Long): Mono<Personnel>
+    fun searchPersonnel(keyword: String?): Mono<List<Personnel>>
+    fun listByDepartment(departmentId: Long): Mono<List<Personnel>>
+    fun listByRole(role: String): Mono<List<Personnel>>
+    fun createPersonnel(personnel: Personnel): Mono<Boolean>
+    fun updatePersonnel(personnel: Personnel): Mono<Boolean>
+    fun deletePersonnel(id: Long): Mono<Boolean>
+    fun setActive(id: Long, active: Boolean): Mono<Boolean>
+    fun exportAllPersonnel(): Mono<List<Personnel>>
+}