A large number of clinical studies have shown that oral administration, external application or enema of Chinese medicine can promote the recovery of gastrointestinal function and the absorption of pancreatic inflammation. The aims of the study is to explore the application of Dachaihu Decoction Compound (DDC)and Rhubarb Single Medicine (RSM) in the Treatment of Acute Pancreatitis.

Inclusion Criteria:

• Age from 18 to 65 years old
• Meet the diagnostic criteria of western medicine for acute pancreatitis, within 48 hours of onset
• Consent of the subjects, who sign the informed consent form

Exclusion Criteria:

• Women who are pregnant or breastfeeding
• Acute abdomen such as organic intestinal obstruction, gastrointestinal perforation, purulent cholangitis, etc.
• Patients with a history of severe heart, liver, kidney and other important organ diseases
• Patients with mental illness and malignant tumors
• People who have allergies, or are allergic to a certain drug ingredient