diff --git a/yuthon_official/models/yuthon_official.py b/yuthon_official/models/yuthon_official.py
index 941f1658d..3a7aea583 100644
--- a/yuthon_official/models/yuthon_official.py
+++ b/yuthon_official/models/yuthon_official.py
@@ -37,6 +37,14 @@ class YuthonOfficial(models.Model):
         'flat_id',
         string="抄送单位"
     )
+    main_unit_type = fields.Selection([
+        ('gov', '行政事业单位'),
+        ('other', '其他单位')
+    ], string='主送单位类型')
+    copy_unit_type = fields.Selection([
+        ('gov', '行政事业单位'),
+        ('other', '其他单位')
+    ], string='抄送单位类型')
     department_ids = fields.Many2many('hr.department', string='部门范围')
     employee_ids = fields.Many2many('hr.employee', string='人员范围')
     users_role_ids = fields.Many2many('soong.user.role', string='角色范围')
@@ -183,6 +191,20 @@ class YuthonOfficial(models.Model):
         else:
             self.reference_cold = False
 
+    @api.onchange('main_flats_ids')
+    def _onchange_main_flats_ids(self):
+        if self.main_flats_ids:
+            self.main_unit_type = self.main_flats_ids[0].unit_type
+        else:
+            self.main_unit_type = False
+
+    @api.onchange('copy_flats_ids')
+    def _onchange_copy_flats_ids(self):
+        if self.copy_flats_ids:
+            self.copy_unit_type = self.copy_flats_ids[0].unit_type
+        else:
+            self.copy_unit_type = False
+
     @api.onchange('company_id1')
     def onchange_company_id1(self):
         current_year = fields.Date.today().year
@@ -422,6 +444,20 @@ class YuthonPropertyOfficial(models.Model):
         else:
             self.reference_cold = False
 
+    @api.onchange('main_flats_ids')
+    def _onchange_main_flats_ids(self):
+        if self.main_flats_ids:
+            self.main_unit_type = self.main_flats_ids[0].unit_type
+        else:
+            self.main_unit_type = False
+
+    @api.onchange('copy_flats_ids')
+    def _onchange_copy_flats_ids(self):
+        if self.copy_flats_ids:
+            self.copy_unit_type = self.copy_flats_ids[0].unit_type
+        else:
+            self.copy_unit_type = False
+
     @api.onchange('company_id1')
     def onchange_company_id1(self):
         current_year = fields.Date.today().year
diff --git a/yuthon_official/views/yuthon_official_views.xml b/yuthon_official/views/yuthon_official_views.xml
index b169585ae..55c1bd818 100644
--- a/yuthon_official/views/yuthon_official_views.xml
+++ b/yuthon_official/views/yuthon_official_views.xml
@@ -78,6 +78,8 @@
                             <field name="reference_cold" invisible="not is_cold"/>
                             <field name="main_flats_ids" options="{'no_create': True, 'no_open': True}" widget="many2many_tags"/>
                             <field name="copy_flats_ids" options="{'no_create': True, 'no_open': True}" widget="many2many_tags"/>
+                            <field name="main_unit_type" invisible="1"/>
+                            <field name="copy_unit_type" invisible="1"/>
                             <field name="date"/>
                             <field name="issues_result" invisible="is_meet == False"/>
                         </group>