Transcutaneous elctroacupuncture(TEA) at ST36 can improve gastrointestinal motility. Therefore,the investigators hypothesized that if TEA is applied to the preparation of small bowel capsule endoscopy, the small bowel peristalsis of patients can be regulated by electrical stimulation at (ST36). On the one hand, it can be used in combination with compound polyethylene glycol electrolyte powder, which is conducive to the discharge of small bowel contents and improve the imaging quality. On the other hand, it can improve the diagnostic rate by adjusting the intestinal transit time, And the completion rate of the examination can be improved by accelerating the gastric emptying time of capsule endoscopy.

Therefore, in order to explore the effect of TEA stimulation at ST36 combined with polyethylene glycol powder on preparation for small bowel capsule endoscopy, the investigators designed this study.

Inclusion Criteria:

Agree to sign an informed consent form; Aged 18 to 75 years old Plan to undergo small bowel capsule endoscopy;

Exclusion Criteria:

Clinical diagnosis of gastrointestinal stricture, bowel obstruction, gastrointestinal fistula, intestinal resection; Clinical diagnosis of dysphagia; Those who require fasting or parenteral nutrition support treatment; Individuals with gastrointestinal motility disorders; Oral administration of gastrointestinal motility drugs within 1 week; Implanting medical electronic devices; Those who are allergic to compound polyethylene glycol electrolyte powder and dimethicone oil and cannot tolerate oral laxatives for intestinal preparation; Skin diseases that affect electrode fixation; Pregnant, preparing to conceive, or breastfeeding patients; Familiar with acupuncture and moxibustion treatment, acupoint selection or meridians; Researchers believe that it is not suitable for participants.