diff --git a/backend/app/db/crud.py b/backend/app/db/crud.py
index 57bb32e..014f8e3 100644
--- a/backend/app/db/crud.py
+++ b/backend/app/db/crud.py
@@ -308,7 +308,8 @@ def delete_domain(db: Session,id: int):
 def edit_domain(
     db: Session, domain: schemas.DomainIn,userid:int
 ) -> schemas.Domain:
-    domain.encrypt_kintonepwd()
+    if domain.kintonepwd != "":
+        domain.encrypt_kintonepwd()
     db_domain = db.query(models.Domain).get(domain.id)
     if not db_domain:
        raise HTTPException(status.HTTP_404_NOT_FOUND, detail="Domain not found")
@@ -316,7 +317,8 @@ def edit_domain(
     db_domain.name=domain.name
     db_domain.url=domain.url
     db_domain.kintoneuser=domain.kintoneuser
-    db_domain.kintonepwd = domain.kintonepwd
+    if domain.kintonepwd != "":
+        db_domain.kintonepwd = domain.kintonepwd
     db_domain.updateuserid = userid
     db_domain.ownerid = domain.ownerid
     db.add(db_domain)