Whether a tumor in the intestines is serious needs to be determined on a case-by-case basis. If the tumor is benign, it is usually not serious; if the tumor is malignant, it may be more serious. 1. Not serious: if the tumor in the intestines is benign, such as intestinal polyp, lipoma, etc., it is less destructive, usually without infiltration and metastasis, and has less impact on the body. It can be cured through active surgical treatment, and this situation is not serious. 2. Serious: If the tumor growing in the intestine is malignant, such as rectal cancer, colon cancer, etc., it is more destructive and may metastasize to other parts of the body. If it involves other organs and has a greater impact on the body, this situation is usually more serious and the prognosis of surgery is poor. Once found, it is recommended to go to regular hospitals in time to get a clear diagnosis, determine the nature and extent of the lesion, carry out relevant treatment under the guidance of the doctor, and follow the doctor’s instructions to actively cooperate.