Fissures in the buttock groove are due to anal fissures or multiple causes of anal skin cracking. If it is caused by anal fissure, you can apply Yunnan Baiyao to the affected area for treatment. Hemorrhoid cream also has certain anti-inflammatory and pain-relieving purposes, and you can also apply hemorrhoid cream to the affected area for treatment, commonly used hemorrhoid creams include Ma Yinglong Hemorrhoid Cream and Anal Tai Hemorrhoid Cream. If you have dry stools and constipation, you can take oral medicine such as Sophora pill and Angelica Aloe capsule to laxative effect. If the skin around the anus is cracked due to various reasons, you can apply Bactrim ointment to the affected area for treatment, and other ointments such as budesonide ointment and erythromycin ointment can also be used. For chapped skin caused by an imbalance in your own endocrine function, you can apply glucocorticoid ointment for treatment.