Clinical Research Directory

Inclusion Criteria: * Recurrent swelling and pain, along with pus discharge around the anus; * Preoperative MRI or ultrasound confirmed the presence of the fistula; * Underwent incision of the anal fistula, with the postoperative wound diameter ranging from 2 to 4 cm. Exclusion Criteria: 1. Inflammatory bowel disease (such as Crohn's disease) related anal fistula; 2. Complicated with severe dysfunction of heart, liver and kidney (ALT/AST \> 2 times upper limit, Cr \> 1.5 mg/dL); 3. Pregnant or lactating women; 4. Those who are known to be allergic to the components of Zuoqing San;