If a child’s face is swollen and there is a hard lump inside, the size, location, starting cause and accompanying symptoms of the lump are considered, and the common causes are generally oral inflammation causing enlarged lymph nodes, enlarged parotid glands, or skin surface sebaceous cysts. 1, enlarged lymph nodes: lymph nodes are the immune organs of the body, if the child has recent oral diseases such as tooth inflammation or tonsil suppuration, the lymph nodes may be stimulated by inflammation and become enlarged. If the child’s face is swollen and there is a hard lump inside, the hard lump is limited in scope, the border is clear and the pain is obvious when pressed. The parotid gland is located on both sides of the cheeks and in front of the ears. If you find that your child’s face is swollen and there is a hard lump inside, and the hard lump increases significantly, even in front of the ears, the progress is faster. The pain is obvious, sometimes accompanied by fever, consider the possibility of mumps, it is recommended to follow medical advice oral cefixime and other antibiotics treatment; 3, facial sebaceous cyst: sebaceous cyst is a variety of causes of sebaceous gland blockage formed by retention cysts, is a benign lesion, all ages can be seen, the general hard mass is limited, clear borders, pressure does not hurt, occasionally infection and inflammation will have local pain. It is a benign lesion that can be seen at all ages. The sebaceous cysts are usually treated by surgical removal of the cyst wall, which is not easy to recur.