diff --git a/scripts/load_path.py b/scripts/load_path.py
index 9a7bd92..8763d97 100755
--- a/scripts/load_path.py
+++ b/scripts/load_path.py
@@ -75,6 +75,7 @@ paths = [
     ("/supplychain/api/supplychain_accounting_update.dspy", "logined"),
     ("/supplychain/api/contract_attach_list.dspy", "logined"),
     ("/supplychain/api/contract_attach.ui", "logined"),
+    ("/supplychain/api/contract_upload.dspy", "logined"),
     ("/supplychain/distribution_agreement_items_list", "logined"),
     ("/supplychain/distribution_agreement_items_list/add_distribution_agreement_items.dspy", "logined"),
     ("/supplychain/distribution_agreement_items_list/delete_distribution_agreement_items.dspy", "logined"),
diff --git a/supplychain/init.py b/supplychain/init.py
index b4a15eb..2ba627e 100644
--- a/supplychain/init.py
+++ b/supplychain/init.py
@@ -10,7 +10,13 @@ from appPublic.jsonConfig import getConfig
 from appPublic.dictObject import DictObject
 from sqlor.dbpools import DBPools
 from ahserver.serverenv import ServerEnv
+from ahserver.filestorage import FileStorage
+from filemgr.filemgr import FileMgr
 
+
+class ContractAttachMgr(FileMgr):
+    """Supplychain attachment manager — fiid from params_kw."""
+    pass
 MODULE_NAME = "supplychain"
 
 
@@ -926,6 +932,7 @@ def load_supplychain():
     env.calculate_sale_amounts = calculate_sale_amounts
     # Attachment folder helper
     env.ensure_contract_folder = ensure_contract_folder
+    env.ContractAttachMgr = ContractAttachMgr
     return True
 
 
diff --git a/wwwroot/api/.supply_contracts_create.dspy.swp b/wwwroot/api/.supply_contracts_create.dspy.swp
new file mode 100644
index 0000000..2b4d353
Binary files /dev/null and b/wwwroot/api/.supply_contracts_create.dspy.swp differ
diff --git a/wwwroot/api/contract_attach.ui b/wwwroot/api/contract_attach.ui
index 6b5efdb..d7b148d 100644
--- a/wwwroot/api/contract_attach.ui
+++ b/wwwroot/api/contract_attach.ui
@@ -6,7 +6,7 @@
 {% set fiid = 'dist_agreement_attach' %}
 {% endif %}
 {% set folder = ensure_contract_folder(request, contract_id, fiid) %}
-{% set upload_url = entire_url('/filemgr/upload_file.dspy') %}
+{% set upload_url = entire_url('contract_upload.dspy') %}
 {% set list_url = entire_url('contract_attach_list.dspy') %}
 {
     "widgettype": "VBox",
diff --git a/wwwroot/api/contract_upload.dspy b/wwwroot/api/contract_upload.dspy
new file mode 100644
index 0000000..e2ff436
--- /dev/null
+++ b/wwwroot/api/contract_upload.dspy
@@ -0,0 +1,6 @@
+fiid = params_kw.fiid or 'supply_contract_attach'
+fmgr = ContractAttachMgr(fiid)
+stat = await fmgr.add_file(request, params_kw)
+if stat.status == 'success':
+    return UiMessage(title='上传成功', message='文件已添加')
+return UiError(title='上传失败', message=stat.message or 'unknown error')