The presence of roundworms inside the body is considered to be caused by the following conditions: first, lack of attention to hygiene in life, such as the entry of objects containing roundworm eggs inside the human body. Second, it may be related to the patient’s frequent contact with animals, kittens and puppies will have roundworm eggs on them, plus the lack of timely hand washing afterwards. Third, it may be that the diet is unhygienic, the living drinking water contains roundworm eggs or the food eaten is not clean, and the disease enters from the mouth. Fourth, there may also be often eat raw food, a variety of germs are not subject to high temperature extermination, directly into the patient’s stomach, will cause diarrhea, abdominal pain and anal itching, once suffering from roundworm disease should be timely use of intestinal worms for deworming treatment.