Effects of Acupuncture on Abdominal Pain-related Intestinal Flora in Patients With Crohn's Disease

Inclusion Criteria: 1. aged 18-75, no gender limit; 2. disease in mild and moderate active period: 150≤CDAI\<450 and meet at least one of the following: serum C-reactive protein (CRP) levels ≥5mg/L, Fecal calprotectin concentration≥250μg/g or endoscopic examination shows ulcers. remission period: CDAI \<150 and meet at least one of the following: serum CRP\<5 mg/L, Fecal calprotectin concentration \<250μg/g or endoscopic examination shows no ulcer; 3. patients were not taking medication or were only taking one or more of the following drugs: mesalazine (≤4g/d and mesalazine was used for at least 1 month), prednisone (≤15mg/d and prednisone was used for at least 1 month) and / or azathioprine (≤1mg/kg/d and azathioprine was used for at least 3 month); 4. those who have not used biologics within 3 months before entering the study; 5. those who have never experienced acupuncture; 6. those who understand and agree to participate in this study and sign the informed consent form. Exclusion Criteria: 1. patients who are recently pregnant or in pregnancy or lactation; 2. patients with serious organic diseases; 3. patients diagnosed as psychosis; 4. patients who suffer from multiple diseases and need to take other drugs for a long time, and may affect the observation of the efficacy of this trial; 5. severe skin diseases (such as erythema nodosum, pyoderma gangrenosum, etc.), eye diseases (such as iritis, uveitis, etc.), thromboembolic diseases and other serious extraintestinal manifestations; 6. there are serious intestinal fistula, abdominal abscess, intestinal stenosis and obstruction, perianal abscess, gastrointestinal hemorrhage, intestinal perforation and other complications; 7. patients with short bowel syndrome who have undergone abdominal or gastrointestinal surgery in the past half a year; 8. there are skin diseases or defects in the selected area of acupuncture and moxibustion that cannot be performed.