diff --git a/ecs/jskult-webapp/src/controller/ultmarc.py b/ecs/jskult-webapp/src/controller/ultmarc.py
index 5efa8530..8ba036e1 100644
--- a/ecs/jskult-webapp/src/controller/ultmarc.py
+++ b/ecs/jskult-webapp/src/controller/ultmarc.py
@@ -4,8 +4,8 @@ from fastapi import APIRouter, Depends, Request
 
 from src.depends.services import get_service
 from src.model.internal.session import UserSession
-from src.model.request.ultmarc_doctor import (
-    UltmarcDoctorInfoModel, UltmarcDoctorSearchModel)
+from src.model.request.ultmarc_doctor import (UltmarcDoctorInfoModel,
+                                              UltmarcDoctorSearchModel)
 from src.model.request.ultmarc_inst import (UltmarcInstInfoModel,
                                             UltmarcInstSearchModel)
 from src.router.session_router import AuthenticatedRoute
@@ -77,7 +77,8 @@ def search_inst(
     ultmarc = ultmarc_service.prepare_ultmarc_inst_search_view()
     ultmarc.is_batch_processing = is_batch_processing
     ultmarc.inst_data = ultmarc_inst_data
-    ultmarc.form_data = ultmarc_inst_form
+    # 画面表示用にエスケープを解除して返す
+    ultmarc.form_data = ultmarc_inst_form.unescape()
 
     # セッション書き換え
     session.update(
diff --git a/ecs/jskult-webapp/src/model/request/ultmarc_inst.py b/ecs/jskult-webapp/src/model/request/ultmarc_inst.py
index 7b60bfd9..ba9cce90 100644
--- a/ecs/jskult-webapp/src/model/request/ultmarc_inst.py
+++ b/ecs/jskult-webapp/src/model/request/ultmarc_inst.py
@@ -1,3 +1,4 @@
+import html
 from typing import Optional
 
 from fastapi import Form
@@ -46,6 +47,12 @@ class UltmarcInstSearchModel(BaseModel):
             pagination_page_number=pagination_page_number
         )
 
+    def unescape(self):
+        for k, v in self.dict().items():
+            if v is not None and type(v) is str:
+                setattr(self, k, html.unescape(v))
+        return self
+
 
 class UltmarcInstInfoModel(BaseModel):
     inst_id: Optional[str]