There is a mass under the right ear that can be caused by the following: First, enlarged lymph nodes around the auricle. In some patients, this is caused by local infection, and the mass can gradually decrease and subside after anti-infection treatment. Second, lesions that occur in the skin, mainly sebaceous cysts. It is prone to secondary infection. Patients may also show pain, fever, increased local skin temperature and even fluctuating sensation, i.e., the formation of pus, which requires surgical incision and drainage if necessary. After the surgery, in addition to anti-infection treatment, it is also necessary to carry out local drug changes to promote the healing of the wound. The third is that there are some patients who are suffering from parotid gland lesions, and the common one is a mixed tumor of the parotid gland, which is also a benign lesion, and should be treated with surgery at an early stage after diagnosis, and after surgery, attention should be paid to local compression bandages to avoid post-operative complications of parotid duct fistula.