diff --git a/apps/audits/models.py b/apps/audits/models.py
index aab3bbde9..bd7988dbe 100644
--- a/apps/audits/models.py
+++ b/apps/audits/models.py
@@ -5,7 +5,7 @@ from django.db.models import Q
 from django.utils.translation import ugettext_lazy as _
 from django.utils import timezone
 
-from orgs.mixins.models import OrgModelMixin
+from orgs.mixins.models import OrgModelMixin, Organization
 from orgs.utils import current_org
 
 __all__ = [
@@ -63,6 +63,11 @@ class OperateLog(OrgModelMixin):
     def __str__(self):
         return "<{}> {} <{}>".format(self.user, self.action, self.resource)
 
+    def save(self, *args, **kwargs):
+        if current_org.is_root() and not self.org_id:
+            self.org_id = Organization.ROOT_ID
+        return super(OperateLog, self).save(*args, **kwargs)
+
 
 class PasswordChangeLog(models.Model):
     id = models.UUIDField(default=uuid.uuid4, primary_key=True)
diff --git a/apps/audits/signals_handler.py b/apps/audits/signals_handler.py
index 05de237d3..79b936c83 100644
--- a/apps/audits/signals_handler.py
+++ b/apps/audits/signals_handler.py
@@ -199,7 +199,7 @@ def on_m2m_changed(sender, action, instance, reverse, model, pk_set, **kwargs):
             resource = resource_tmpl.format(**{
                 instance_name: instance_value,
                 model_name: str(obj)
-            })
+            })[:128]  # `resource` 字段只有 128 个字符长 😔
 
             to_create.append(OperateLog(
                 user=user, action=action, resource_type=resource_type,