After anal fistula surgery wound has white small rice-like bumps mostly due to postoperative infection, abscess is not completely removed, eczema and other factors, should be timely consultation to identify the cause of the disease. 1. postoperative infection: mostly due to factors such as incomplete hygiene cleaning, resulting in germs invading the incision site, the formation of suppurative infection, can appear after anal fistula surgery wound white small rice like pimples symptoms. 2. abscess is not completely removed: anal fistula surgery process, due to incomplete removal of pus cavity, resulting in postoperative pus can not be discharged in a timely manner, the incision area of inflammation infiltration, can be caused by anal fistula surgery wounds have white small rice like pimples of symptoms. 3. eczema: mostly due to post-surgical hygiene cleaning is not complete, buttock humidity and other factors, resulting in local inflammatory stimulation, can be manifested in the anal fistula surgery wound white small rice like small pimples of symptoms, accompanied by itching. In daily life, anal fistula surgery after surgery should be changed regularly, good hygiene cleaning, reasonable diet, avoid intake of spicy stimulating food, to prevent inflammation aggravation, if there is a postoperative wound with white small rice grains of small bumps of the situation, should be timely medical examination to identify the cause of the disease, so as not to delay the condition.