Chronic obstructive parotitis, mostly due to local causes, should be the main focus of removal of the cause. If there is a salivary stone, remove it first, and if the duct opening is narrow, use a blunt probe to probe into the duct. If the duct is narrow, a blunt probe can be used to probe into the duct. The mouth of the duct can be gradually expanded by using the thinner one and then the thicker one, and drugs can be injected into the duct. Such as iodized oil, antibiotics, etc. have certain antibacterial or antimicrobial effects. Other conservative treatments are also available, including massaging the parotid gland from back to front to promote secretion, chewing sugar-free gum or containing vitamin C tablets to promote saliva secretion. Gargling with slightly hot saline has an antibacterial effect and reduces retrograde infection of the gland. Surgical treatment can be considered for those who do not respond to the above treatments. There are two surgical approaches to control inflammation by ligating the ducts and causing the parotid gland to atrophy. The first is to perform duct ligation, and the second is to consider superficial parotidectomy with facial nerve preservation when various conservative treatments are ineffective, duct ligation has failed, and the patient has a surgical request.