Hyperplasia of the posterior wall of the oral palate can be seen in pharyngeal papilloma, fibroma, oral malignant tumors, and so on. 1. Pharyngeal papilloma: this disease is caused by human papilloma virus infection, resulting in benign hyperplasia of the pharynx, in the mucosal epithelium and submucosal connective tissue to the surface of the pharynx as a papillary protrusion. 2. Fibroma: originated from fibrous connective tissue tumor, occurring in the mouth can be seen in the hard palate, tongue and the bottom of the mouth, the lumps are small, bulbous protuberance, tipped or not tipped, the border is clear, and the surface is covered with normal mucosa. 3. Oral malignant tumors: such as oral verrucous carcinoma, mucoepidermoid carcinoma, oropharyngeal carcinoma, fibrosarcoma, palatal carcinoma, etc., which can also be seen in the above mentioned manifestations. Besides the above diseases, it may also be caused by inflammatory hyperplasia such as stomatitis or pharyngitis. It is recommended to go to the hospital in time for consultation, and after clarifying the cause of the disease, give targeted treatment or therapy.