Submandibular adenitis is an inflammatory reaction that occurs in young adults. Patients usually present with symptoms such as increased respiration, fever, enlargement of the submandibular gland, and discharge of pus. Treatment of submandibular adenitis is usually done clinically by pathogenic treatment, physical therapy, antibiotic therapy, and surgical removal. It is recommended that patients with submandibular adenitis go to the otolaryngology department of a hospital for submandibular adenitis examination and take a treatment plan according to the cause. Oral antibiotics and other complementary treatments are recommended for early inflammation, and intravenous medication and supportive therapy are recommended when the condition is severe. Patients with submandibular adenitis are first advised to take antibiotic anti-inflammatory treatment and local physical therapy. Usually, the septic area is first incised and drained, and when the inflammation subsides, the foreign body is removed. If the severity of submandibular adenitis is relatively mild, you can take some medications, such as Menoxin and Meclizine, which are common. If the patient with submandibular adenitis has a long period of onset and the submandibular gland has become fibrotic or even lost its function and foreign bodies and stones cannot be removed, submandibular adenectomy is recommended. Patients suffering from submandibular adenitis should take the appropriate treatment plan according to their condition and the severity of their condition.