Clinical Research on Fuzi-Partition Moxibustion in Treating Diarrhea Predominated Irritable Bowel Disease

INTERVENTION: Group A:once every two days, one cone;Group B:once every two days, two cone;Group C:once a day, one cone;Group D:once a day, two cone;Group E:pinaverium 50mg orally taken once daily; CONDITION: Irritable Bowel Syndrome PRIMARY OUTCOME: Functional Magnetic Resonance Imaging;clinical syndrome;Self‐Rating Depression Scale (SDS); SECONDARY OUTCOME: Blood Flow of Microcirculation in Acpoints;Temperature of the Acupoint;Self‐Rating Anxiety Scale (SAS); INCLUSION CRITERIA: 1. Ages are range from 18 to 65 years old with no limitation of sex; 2. Meeting the Rome III diagnostic criteria; 3. Willing to participate in the study and sign the informed consent.