The main symptom of sublingual gland cyst is a light blue, soft and fluctuating translucent swelling in the floor of the mouth, and patients usually have no conscious symptoms. 1. Sublingual gland cyst is a common salivary gland disease in oral and maxillofacial surgery, which is mainly caused by trauma or salivary gland duct obstruction; the main symptom of sublingual gland cyst is the appearance of light blue, soft and fluctuating swelling on the mucous membrane of the floor of the mouth; there is usually no self-conscious symptom, i.e., there is no obvious pain or discomfort; however, if the cyst is large, it will raise the tongue to affect the articulation or mastication. 2. Sublingual gland cysts are generally benign cysts, and the treatment includes medication and surgery; medication, i.e. injection of paxillin, anhydrous ethanol, etc. into the cyst to promote the absorption of the cyst; and surgery, i.e. sublingual gland gland removal, which is to remove the cyst and the sublingual gland completely in order to achieve the purpose of eradication. It is recommended to go to a specialized hospital for consultation and treatment.