Surgical threads for perianal abscesses include floating threads and solid threads. Solid threads usually fall off by themselves, while floating threads need to be cleaned. 1. Solid line: When the abscess is found to be deeper during the surgery of perianal abscess, the doctor will use the hanging line therapy to protect the function of anal sphincter, using solid line, i.e. rubber band, which can play the role of chronic cutting sphincter, with the side of the cut healing after the surgery, the doctor will give intermittent tightening of the line, and the solid line will come off by itself generally after 2~3 times. 2. Floating line: perianal abscess range is relatively large, in order to smooth drainage after surgery, you can hang a floating line in the abscess site for drainage, to ensure that the wound seepage continues to flow, when the gradual growth of granulation tissue, fibrous tissue hyperplasia, close to the surface of the skin can be given to the floating line to be excised. For patients after surgery for perianal abscess, it is recommended to follow the doctor’s instructions on time to change the medicine, regular review, there are abnormal phenomena, timely treatment.