diff --git a/catalog/collection/models.py b/catalog/collection/models.py
index 6664a712..9412c033 100644
--- a/catalog/collection/models.py
+++ b/catalog/collection/models.py
@@ -3,3 +3,7 @@ from catalog.common import *
 
 class Collection(Item):
     category = ItemCategory.Collection
+
+    @property
+    def owner_id(self):
+        return self.journal_item.owner_id if self.journal_item else None
diff --git a/catalog/common/models.py b/catalog/common/models.py
index b42e109a..46e4f87c 100644
--- a/catalog/common/models.py
+++ b/catalog/common/models.py
@@ -221,7 +221,7 @@ class Item(SoftDeleteMixin, PolymorphicModel):
         self.primary_lookup_id_type = None
 
     def __str__(self):
-        return f"{self.id}|{self.uuid} {self.primary_lookup_id_type}:{self.primary_lookup_id_value if self.primary_lookup_id_value else ''} ({self.title})"
+        return f"{self.__class__.__name__}|{self.id}|{self.uuid} {self.primary_lookup_id_type}:{self.primary_lookup_id_value if self.primary_lookup_id_value else ''} ({self.title})"
 
     @classmethod
     def lookup_id_type_choices(cls):
diff --git a/journal/models.py b/journal/models.py
index 5e1e8461..99f40d7e 100644
--- a/journal/models.py
+++ b/journal/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.db.models.fields import related
 from polymorphic.models import PolymorphicModel
 from users.models import User
 from catalog.common.models import Item, ItemCategory
@@ -667,7 +668,9 @@ _RE_HTML_TAG = re.compile(r"<[^>]*>")
 class Collection(List):
     url_path = "collection"
     MEMBER_CLASS = CollectionMember
-    catalog_item = models.OneToOneField(CatalogCollection, on_delete=models.PROTECT)
+    catalog_item = models.OneToOneField(
+        CatalogCollection, on_delete=models.PROTECT, related_name="journal_item"
+    )
     title = models.CharField(_("标题"), max_length=1000, default="")
     brief = models.TextField(_("简介"), blank=True, default="")
     cover = models.ImageField(