In the clinic, we often meet patients complaining of anal swelling, especially post-operative patients, “it feels like the anus is falling down”, which is very painful. The use of a variety of Western medicine, microwave physiotherapy, sitz baths and other methods do not see relief. The theory of Chinese medicine is that anal swelling is due to deficiency of middle energy and Qi deficiency. Therefore, based on my previous experience, I use the sutra formula Tonic Zhong Yi Qi Tang with flavor to treat anal swelling, which is more effective, usually 3 pairs of Chinese medicine will be effective and 6 pairs will be cured. After special examination to exclude other organic lesions.