Submucosal muscle tissue hyperplasia may be a smooth muscle tumor. Smooth muscle tumors are benign tumors that occur in young and middle-aged people in the submucosal smooth muscle layer of the digestive tract and uterus. The cause of the tumor is not clear, but may be related to genetic and inflammatory stimuli. It may be asymptomatic or mildly painful. Submucosal smooth muscle tumors can be diagnosed by imaging and pathologic tests. The disease is usually treated by surgical excision, and the prognosis is good after treatment, and individual smooth muscle tumors usually do not recur. It is recommended that the patient seek medical attention in a timely manner, complete the examination, and evaluate the severity of the disease under the guidance of the doctor after the diagnosis is confirmed. If necessary, follow the doctor’s instructions for surgical resection treatment. Keep a good mindset, avoid too much tension and anxiety, regular work and rest, and eat a light diet.