This research was done to survey the dermatophytosis prevalence in Gonabad primary schools in relation with demographic features and health behaviors in the year 1378 in a descriptive - analytical method.Cluster sampling was used and schools were selected in a simple and randomly method.Results: In this Survey all infected ones on hairs of their heads and all other parts of the body as: trunk, feet, hands, face, groin and nails were not infected, then according to the prevalence of tinea capitis infection on the students head of girls and boys in Gonabad primary schools in year 1378 was equall to 3/4% that 27/6% of the infected ones stand for urban schools and 72/4% for rural schools and this infection prevalence was sequence 1/9% and 5% for urban and rural schools.79/3% of the boys and 20/7% of the girls were infected.The results also showed a meaningful relationship between tinea capitis infection and using common tools like: comb, towel, bed, hat and scarf, infection and the family size, and living area but it didn't show a meaningful relationship between a bath at home and bathing times with infection to the disease.Conclusion: In general the results shows that there is a meaningful relation between infection to . tinea capitis with lifestyle, health habits, demographic characteristics, direct contact of children together at home and school.Boys are three times more suceptible to Tinea capitis than girls, it's couse may is in more likely of injury in their head skin in playing and less attention of them for obeying of health principles in compare with girls. The existence of suceptible condition for infection in rural areas in compare to urban areas can be a vision for prevalence of tinea capitis in the students of rural areas. Then paying attention to health - education and school health, finding the infected people and curing them in rural schools of this city seems necessary.