To investigate the treatment for lingual thyroglossal duct cyst by low temperature coblation on endoscope.Eleven cases of lingual thyroglossal duct cyst were treated by low temperature coblation on endoscope,to observe the curative effect and complication.Eleven cases of lingual thyroglossal duct cyst were satisfied after operation, without serious complication. There were no recurrence during a followed up for 1-3 years after operation.The operation for lingual thyroglossal duct cyst by low temperature coblation on endoscope was easy,safe and effective.