diff --git a/sf_manufacturing/models/mrp_workorder.py b/sf_manufacturing/models/mrp_workorder.py
index 817e6421..4bb54548 100644
--- a/sf_manufacturing/models/mrp_workorder.py
+++ b/sf_manufacturing/models/mrp_workorder.py
@@ -643,10 +643,13 @@ class ResMrpWorkOrder(models.Model):
     def _compute_state(self):
         for workorder in self:
             if workorder.routing_type == '装夹预调':
-                if not workorder.cnc_ids:
+                cnc_workorder = self.search(
+                    [('production_id', '=', workorder.production_id.id), ('routing_type', '=', 'CNC加工')],
+                    limit=1, order='id asc')
+                if not cnc_workorder:
                     workorder.state = 'waiting'
                 else:
-                    for item in workorder.cnc_ids:
+                    for item in cnc_workorder.cnc_ids:
                         functional_cutting_tool = self.env['sf.functional.cutting.tool.entity'].search(
                             [('tool_name_id.name', '=', item.cutting_tool_name)])
                         if not functional_cutting_tool: