The fact that the lips have meat grains may be due to common warts, salivary gland tumors, suppurative granulomas and other factors. 1. common warts: is due to the human papilloma virus infection of the skin mucous membrane caused by benign proliferative disease, has a certain degree of contagious, the initial performance of the grayish white flat papules, and then gradually increase, obviously elevated, can be single, multiple, and each other fusion, can show the pattern of cabbage, papilloma, the texture is hard. 2. Salivary gland tumor: gene mutation, physical factors and other factors, leading to abnormal proliferation of salivary gland gland epithelial cells, and salivary gland tumor, can occur in the face, as well as the lips and other parts of the mouth, there are benign and malignant, benign tumors are painless, slow-growing masses, malignant tumors may be faster growth, and there may be symptoms of pain, numbness and so on. 3. Pyogenic granuloma: mostly due to trauma, pus bacteria invade the skin, resulting in a granulomatous reaction, is a benign skin tumor, manifested as hemangioma-like or papillary damage, bright red or dark red small papules, smooth surface, slow or rapid enlargement, usually no conscious symptoms, no pressure pain. Flesh grain on the lips may also be due to other factors, it is recommended that patients seek medical attention in a timely manner, and actively cooperate with the relevant examination, in order to clarify the cause of the symptomatic treatment.