Abstract: Objective To learn the occurrent frequency and regularity of diarrhea in Hami district. Methods According to the unified projects of Municipality, the samples were collected and tested with the same methods. Result There were 3 401 patients (940 64/ 100 000) reported in 50 monitored spots on May 1 to Sep 30 in 2002, in which the main kinds of diarrhea included infection diarrhea (35.93%), bacillary dysentery (13.05%) and others (51.02%). The diseases occurred on May and got fastigium during July and October.The age of the patients was mainly concentrated on 0-4and 30-34 years old.The number of the male patients was higher than female,and most of the patients were children,farmers and workers inhibited dispersedly.Any kinds of positive diarrhea bacterias had not been inspected in the city rivers,drinking water,dejecta in toilet,food and the dejecta of animals in the district.Conclusion There were no any kinds of epidemic diarrhea diseases occurred in Hami Distriet in 2002.The incidence of bacillary dysentery was close to the last year.But we should strengthen the precention of it,especially in children,and should choose more sensitive medicine to ensure the curative effect.