This study evaluates the effect of squatting on the toilet on gastric transit time and complete examination rate of capsule endoscopy.In the observation group, the patients could go to squatting on the toilet at any time as they want to after taking the capsule.

The subjects were divided into a control group and an observation group according to whether the patient squatted in the toilet, In the control group, the patients took discontinuous right lateral position, walked on a flat road and climbed the stairs alternately. In the observation group, in addition to the above ways, the patients could go to squatting on the toilet at any time in the first hour after taking the capsule. The operator observed the position of capsule every one hour. The examination was over when capsule endoscopy entered the colon. If the capsule remained in the small intestine, the examination continued until the capsule ran out of power.

Inclusion Criteria:

• unexplained gastrointestinal bleeding, unexplained chronic abdominal pain and diarrhea, suspected Crohn's disease, suspected small intestinal tumor, and patients needing to exclude small intestinal diseases.

Exclusion Criteria:

• suspected intestinal obstruction and intestinal stenosis, esophageal stenosis or dysphagia, history of abdominal operation, or diabetes mellitus.

the patients needed to the examination of capsule endoscopy.