Inclusion Criteria:  Clinical diagnosis of Functional bloating/distension with Rome IV; Aged 18-65 years old；  Exclusion Criteria:  Have taken drugs that may affect gastrointestinal motility in the past week; Have taken antibiotics and probiotics in the past month; The history of gastrointestinal surgery; Helicobacter pylori is not cleared； Pregnant and breastfeeding women; Skin allergies.