Anal fissures may occur as a result of a fall, but the specifics need to be determined under a doctor’s supervision. The cause of anal fissure is not clear, it may be due to long-term constipation, anal trauma, infection, narrowing of the anal canal and other factors. Generally mild falls do not cause anal fissure. Excessive force when falling may form an impact on the perianal skin, which may induce the occurrence of fracture. Patients generally appear anal fissure, it is recommended to go to the hospital for examination in a timely manner, and under the guidance of the doctor according to the actual condition of the use of hemorrhoidal suppositories, wheat fiber granules and other drugs to treat. For more serious patients can take anal fissure resection, anal flap technology and other surgical methods for treatment. Patients with anal fissure should pay attention to appropriate rest, avoid strenuous exercise, and keep the perianal skin clean. If pain and other discomforts occur, it is recommended to seek medical treatment in time and follow the doctor’s instructions.