Magnetic capsule gastroscopy can be used to examine the intestines, but care needs to be taken to prepare adequately before the examination, as well as to exclude contraindications. Magnetic capsule gastroscopy can be used to examine the small intestine and stomach. Diseases such as intestinal ulcers, intestinal polyps, and Crohn’s disease can be detected and evaluated with the use of magnetic capsule gastroscopy. Before performing magnetic capsule endoscopy, it is recommended to fast, prepare the bowel, drink a small amount of water but prohibit chewing and do not exercise strenuously when swallowing magnetic capsule endoscopy. For poor general condition can not be operated or refused to accept any abdominal surgery, prohibit the examination, so as to avoid embedded can not be removed. The test is also prohibited for those who are suspected of having obstruction or narrowing of the gastrointestinal tract, having an electronic implant such as a pacemaker in the body, or women during pregnancy. The test should be performed by a specialized clinician after a rigorous evaluation and is not allowed to be performed on its own.