The main reason for this is that the anus is a place where the anus can be used as a place for the anal hemorrhoids, which are caused by thrombosed external hemorrhoids, perianal abscesses, rectal polyps, rectal prolapse, anal canal cancer, anal cancer and other diseases. The thrombus is elevated under the skin, manifesting as a hard package at the anus, which can be accompanied by sudden pain. Generally, thrombosed external hemorrhoids are mostly treated by thrombus stripping, which can relieve the symptoms and cure the disease; 2. Perianal abscess: It is due to infection after the paranal glands are blocked and spread to the perianal or perirectal tissue gap, which then forms abscesses, which are usually found around the anus, and such patients may have anal pressure pain, hard packets, redness and swelling and other uncomfortable symptoms. Perianal abscesses can be surgically incised and drained, and can generally be relieved within a short period of time; 3. Rectal polyps: mainly due to the abnormal proliferation of some cells in the rectum, resulting in redundant rectal mucosa, when these redundant prolapse, hard bags can appear around the anus. For smaller hard packets can be removed for treatment, for larger hard packets can be treated by endoscopic trap removal; 4, rectal prolapse: mainly due to weak pelvic floor tissues, increased abdominal pressure and other factors lead to anal mass prolapse, which then manifests as hard packets around the anus. The patient may be asked to elevate the buttocks in a prone position, and the doctor will apply quartz wax oil and other lubricants and gently massage around the anus, using force evenly from the tip of the prolapsed intestine to the anus until the prolapsed rectum is returned. If the effect of manual repositioning is not good, sclerotherapy or mucosal resection can be used for treatment; 5. Under the guidance of doctors, some chemotherapeutic drugs, such as fluorouracil and mitomycin, can be used for treatment, but during the period of medication, blood routine and liver function should be tested regularly to avoid leukopenia and liver function damage, etc. In addition, for tumors with small scope of cancer and not extending into the anal canal, local excision is feasible, while transabdominal perineal radical excision is feasible when invading the anal canal; 6. It is usually a round tumor with a diameter of about 6 cm, which may be caused by the stimulation of environment, diet and lifestyle, etc. It may be accompanied with pain and itching for patients with middle or late stage anal cancer. Regarding the treatment of anal cancer, chemotherapy and radiotherapy are generally used, mainly mitomycin and capecitabine are given simultaneously with radiotherapy. For some patients, local excision through surgery may also be required.