The first thing to consider is that the parotid area is infected with virus or bacteria, which may be related to close contact with virus or bacteria carriers. The second consideration is related to the patient’s own immune function and blockage of the parotid duct, etc. The specific need to go to the hospital for examination to clarify the causative factors, and then for symptomatic treatment. 1, bacterial, viral infections: patients are infected with bacteria such as Staphylococcus aureus, streptococcus and herpes simplex virus, coxsackie virus, etc. for various reasons, it can trigger mumps, which is one of the more common causative factors, usually related to This is one of the more common causes of mumps, and is usually related to a decrease in the patient’s resistance or immunity to oral biology, and may also be related to infection of adjacent tissues to the parotid gland. This is especially true in infants and young children, where the autoimmune function is not fully developed and is more likely to cause immune mumps; 3. Parotid duct blockage: i.e., the patient’s own parotid duct and its branches are blocked due to their own imperfect development or due to external causes, leading to bacterial growth and secondary infection, which is common in diseases such as salivary stones, mucus plugs and, less commonly, benign tumors. If the mumps is not controlled and treated in the early stages, an abscess may form later, requiring incision and drainage to remove the pus and heal the disease.