The white color of the anus may be due to perianal eczema, which causes a change in the color of the skin. Perianal eczema is accompanied by itching symptoms along with skin color changes. The main cause of this condition is excessive secretion in the anal canal, which causes the skin around the anus to be in a moist environment for a long time, irritating the local skin and forming eczema. For treatment, you can choose chitosan gel for anal plugs, or hemorrhoid cream for external application, and use bitter ginseng lotion to cleanse the anus after defecation. After the symptoms improve you can maintain a period of daily care, such as using warm water to rinse the perianal area directly after defecation and dry it in a timely manner, wear clothing that is not too tight, try to be comfortable and breathable pants. Don’t stay in the same position for too long, don’t sit and stand for a long time, causing poor air around the anus. You should drink more cool water, eat more laxative foods and do more anal exercises to avoid dry and hard stools that can stimulate the anus and cause other diseases.