Bright red blood in the stool and a little pain in the anus can be due to perianal disease. If the patient has a large amount of bleeding, consider the presence of lower gastrointestinal bleeding combined with perianal disease, which can lead to bright red blood in the stool and a little pain in the anus. It may also be related to the stimulation of defecation caused by dry stools, the specific situation is more complicated, if the symptoms are more troubling to patients, it is recommended to promptly consult a doctor. Common causes 1, perianal disease: clinical can cause stools with bright red blood, anal pain perianal disease including anal fissure, anal fistula, external hemorrhoids or mixed hemorrhoids. These diseases have perianal local lesions, which can trigger bleeding and accompany pain after being stimulated by defecation during the stool; 2. Lower gastrointestinal bleeding: If the patient’s bleeding is large and not spotty, consider that the patient has lower gastrointestinal bleeding combined with the above-mentioned perianal diseases, resulting in bright red blood in the stool and a little pain in the anus. Some of the conditions that cause gastrointestinal bleeding can themselves lead to anal pain sensation, such as dysentery, acute gastroenteritis itself will have the possibility of defecating fresh blood, but also due to the frequent stimulation of defecation can trigger anal pain; 3, defecation stimulation: sometimes some patients do not have perianal disease, anal pain sensation may come from the stimulation of feces, such as dry stool, diarrhea, etc.. If there are also intestinal diseases that damage the intestinal mucosa, such as colonic ulcers, patients may also have bright red blood in the stool and a little pain in the anus, it is recommended to actively seek medical advice to clarify the diagnosis so as not to delay the condition. Treatment 1, perianal disease: If patients suspect that they have perianal disease, they need to seek early medical attention to surgically remove hemorrhoids, anal fistula, and topical anti-infective drugs to prevent infection and promote the healing of anal fissures, anal fistula, hemorrhoids and other skin lesions, and the related symptoms can be effectively relieved after the disease is cured; 2, lower gastrointestinal bleeding: These patients need comprehensive treatment, first by internal hemostatic drugs to control lower Gastrointestinal bleeding, and give intestinal mucosal protective agents to protect the gastrointestinal mucosa from further damage. If infection is present, treatment with anti-infective drugs is required, and perianal disease is treated in the same way as the above point. It is not excluded that the bleeding in some patients is due to the breakage of occupying lesions, which can be treated with surgical excision after endoscopic examination by proctoscopy to fundamentally improve the bleeding symptoms; 3, bowel stimulation: the treatment of intestinal lesions is mostly chosen for surgical treatment, while for dry stools and diarrhea, patients are mostly recommended to improve from diet, such as those with dry stools need to drink more water, eat more vegetables and fruits, and those with diarrhea need to pay attention to dietary hygiene. Patients with bright red blood in the stool and a little anal pain are recommended to seek medical advice to identify the cause of the problem. At the same time, most of them are related to digestive system lesions, so they should avoid eating a lot of spicy food in their diet to avoid stimulating the lesions, which is not conducive to disease recovery. At the same time, eat more fiber-rich and water-rich food to help keep the intestinal tract open. However, it is mainly necessary to consult a doctor to identify the possible causes and treat the cause.