In cases of postpartum constipation, if it becomes severe and leads to an anal fissure, it is necessary to visit the hospital's proctology department for an examination. When an anal fissure occurs, it generally requires the use of medications to invigorate blood and dissolve stasis to facilitate wound healing. You can also apply some grease around the wound to increase the lubrication of the muscles around the anus, which can alleviate some of the difficulties experienced during defecation. In daily life, it is important to drink more water, consume plenty of fresh vegetables and fruits, avoid spicy and irritating foods that can cause internal heat, and you can also use a potassium permanganate solution for sitz baths to alleviate local pain. If the condition of the anal fissure is severe, surgical treatment may be necessary.