The soft meat on the inner wall of the mouth cheek bump may be caused by parotid duct opening, mucous membrane hyperplasia, mucous gland cysts, etc. 1. Parotid duct opening: if the soft meat appears in the area of the second molar and there is no self-conscious symptom, it may be the parotid duct opening, which usually does not need special treatment. 2. Mucosal hyperplasia: mechanical stimulation of the oral mucosa, such as bad dental restorations and food stimulation, can easily cause mucosal injury, while mucosal hyperplasia can occur after repeated injury and soft meat may appear. 3. Mucous gland cysts: traumatic rupture of the ducts, leakage of mucus or duct obstruction may lead to mucous gland cysts, which are manifested as light blue-purple, translucent blisters. It may also be caused by other reasons, and patients are advised to go to the hospital in time.