AIM: To investigate the trachoma related factors on migrant laborers' children in Shanghai.

METHODS: With random cluster sampling, 3 879 migrant laborers' children, aged(10.22±2.00)years old, from 7 schools in Shanghai, participated in the questionnaire survey, under parents' guidance.

RESULTS: Our survey achieved a 98.27% response rate and got a total of 3 812 valid questionnaires, 2 114 males and 1 698 females. Totally 288 cases of trachoma were found. Compared with students who were clinically diagnosed as trachoma, the other students got a high rate in using separate towels, not rubbing eyes, prefer vegetarian diet, asking parents for help when got an eye discomfort and asking for a doctor. Using separate towels would be the main relative factor of the prevalence of trachoma.

CONCLUSION: Good health habits could be protective factors to susceptible population.