Recently, seven-year-old Xiaofeng was changing the water for his goldfish at home when his foot slipped and the glass fish tank fell to pieces, and the splashing glass fragments cut a deep wound on his right face, which bled on the spot. The family rushed to take Xiaofeng to the local rural health clinic for treatment. The doctor briefly examined Xiaofeng’s wound, and then performed a debridement and suture treatment. What is puzzling is that Xiao Feng’s wound did not heal after the stitches, but flowed some clear liquid all day and night, especially when eating, as if his face was always hanging a saliva. A few days later, the parents decided to take Xiao Feng to Guangzhou for medical treatment. Both the duct and the nerve had been ruptured Professor Pan Chaobin, director of oral and maxillofacial surgery at Sun Yat Sen Memorial Hospital (Zhongshan Second Hospital) of Sun Yat Sen University, found that the wound on Xiaofeng’s face was about 3 cm long and perpendicular to the parotid duct. It was highly suspected that the parotid duct had been ruptured, causing saliva to flow out of the wound instead of into the mouth. In order to confirm this suspicion, Professor Pan let Xiao Feng mouth plum, the result of the lower end of the wound flow “water” volume increased greatly, but the oral cavity duct mouth no liquid out. ”The surgical investigation revealed that Xiaofeng’s parotid duct was broken, which was the culprit for the drooling wound. It was also found that his facial nerve branch was also broken, and if the wound had been half a centimeter further back, it would have damaged the common trunk of the facial nerve, thus causing half of the face to be crooked.” Professor Pan used a tiny anesthetic plastic tube to pass from the mouth of the parotid duct outward to the broken end of the duct, and anastomosed the two broken ends after docking them. Professor Pan reminded that patients with deep trauma should not be negligent after the debridement and suture treatment, and should go to the hospital for examination once any follow-up symptoms are found.