Parotid fistula is a rupture of the gland or duct due to various reasons, which manifests itself in the form of redness and vesicles on the cheeks, etc., formed after salivary spillage. Parotid fistula, also known as salivary salivary fistula, is mainly divided into glandular fistula and ductal fistula. 1. Glandular fistula: common in the postoperative period, due to infection, postoperative wound healing is not good and other reasons, resulting in parotid gland breakage, eating or stimulation can be seen in the internal a saliva overflow, can be seen in the cheeks of the point of cool liquid. 2. Catheter fistula: common in trauma, because the catheter is the main channel when the saliva outflow, so the overflow is large, the skin is immersed under the long term, easy to flushing and erosion, serious cases can be accompanied by infection. It is recommended to go to the regular hospital stomatology consultation, by the physician examination to confirm the diagnosis, according to the cause of the parotid area surgery or catheterization mouth reconstruction surgery.