diff --git a/addons/ospp_slide/models/models.py b/addons/ospp_slide/models/models.py
index 93285c7..8cc85c8 100644
--- a/addons/ospp_slide/models/models.py
+++ b/addons/ospp_slide/models/models.py
@@ -34,6 +34,8 @@ class SlideChannel(models.Model):
 
             partner_ids = partner_obj.search([('channel_id', '=', rec.id)])
 
+            rec.message_unsubscribe(partner_ids=[x.partner_id.id for x in partner_ids])
+
             if not rec.instance_ids:
                 if rec.instance_arrangement in ['share', 'both']:
                     vals = []
@@ -160,6 +162,7 @@ class ChannelInstance(models.Model):
     is_notified = fields.Boolean('Is Notified', default=False)
 
     def action_post_instance(self):
+        partner_obj = self.env['slide.channel.partner'].sudo()
         for rec in self:
             subject = f"通知: 《{rec.channel_id.name}》实训环境已经生成"
             html_body = f"""
@@ -171,6 +174,9 @@ class ChannelInstance(models.Model):
             
             <div>预祝学习愉快!</div>
             """
+            partner_ids = partner_obj.search([('channel_id', '=', rec.channel_id.id)])
+            rec.message_unsubscribe(partner_ids=[x.partner_id.id for x in partner_ids])
+
             partner_ids = [x.partner_id.id for x in rec.user_scope]
             kwargs = {}
             rec.channel_id.with_context(mail_create_nosubscribe=True).message_post(
@@ -185,7 +191,6 @@ class ChannelInstance(models.Model):
             rec.is_notified = True
             return True
 
-
     def action_generate_instance(self):
         for rec in self:
             if rec.instance_created: