Chinese medicine can treat old anal fissure, old anal fissure is commonly identified as Yin deficiency and fluid deficiency, Qi stagnation and blood stasis, and can be treated with Chinese herbal soup according to the type of anal fissure. 1. Yin deficiency and fluid deficiency: for patients with symptoms such as pain and blood dripping during bowel movement, deep red fissure, dry mouth and throat, heart-heat (heat in the heart of both hands and feet, and self-consciousness of heart and chest heat), red tongue, little or no moss, and thin pulse (pulse becomes narrow and thin, and accelerated), patients with symptoms such as moistening the intestines can use Moistening Intestines Tang Plus Reductions to nourish yin and clear away heat to moisten the intestines to alleviate the symptoms of presbycusis. 2. Qi stagnation and blood stasis syndrome: for patients with symptoms such as stabbing pain in the anus, tightness of the anus, dark purple fissure, purple tongue, stringy or astringent pulse, etc., patients can use Liumo Tang plus subtractions to regulate the qi and activate the blood, moistening and laxative to improve the symptoms of preserved anal fissure. If the diagnosis of old anal fissure is confirmed, it is recommended to carry out standardized treatment as soon as possible, under the guidance of the doctor to reduce the adverse effects of the disease.