The etiology of chronic recurrent parotitis is complex, and the pathogenesis is not well understood, but may be the result of a combination of factors, generally related to the following factors: 1. congenital developmental abnormalities. 2, low immunity. 3, inflammatory lesions in the upper respiratory tract and oral cavity, retrograde infection of bacteria through the parotid ducts. Clinical manifestations: It can occur in children from infancy to 15 years old, and is most common around the age of 5. The symptoms are repeated swelling of the parotid gland with discomfort, and pressure on the gland reveals pus or gelatinous liquid overflowing from the ducts, with pus formation in a few cases. Most of them last about a week. The younger the age, the shorter the interval between attacks and the more likely it is to recur. As the age increases, the interval lengthens and the duration shortens, and generally there are fewer recurrences after the age of 15. The first thing you need to do is to get rid of the mumps. The principle of treatment is to strengthen resistance, prevent secondary infections and reduce attacks. Let the child drink more water, massage the gland daily to help empty the saliva, rinse the mouth with light salt water and maintain oral hygiene. If there are acute inflammatory manifestations, antibiotics are available.