Bleeding after straining stool has the potential to heal itself if it is caused by minor anal fissures, hemorrhoids, or constipation; other cases generally do not heal themselves. Bleeding after straining is usually caused by hemorrhoids or anal fissures. Most bleeding from anal fissures is bright red in color, where milder fissures can be self-healed by drinking more water, eating more light food, and adjusting lifestyle, but severe old anal fissures require professional treatment. Hemorrhoids are localized venous vascular mass proliferation, and their bleeding is mostly bright red, manifested as blood in the stool, dripping blood after stool or blood on hand paper, which may heal spontaneously in mild cases with attention to dietary modifications, and require active surgical treatment in severe cases. In addition, conditions such as intestinal polyps and rectal cancer may also present with blood in the stool, which cannot be self-healed at this time and should be actively treated in gastroenterology or anorectology. Therefore, when a patient has symptoms of bleeding after straining, the cause should be clarified, and if the symptoms cannot be relieved by medication and lifestyle adjustment, surgical treatment is also required.