Abstract: This paper reports on the result of investigation in 9 210 individuals for human parasite infection in Baoji City. People contracted the infection totalled 6467, with an infection rate of 69.3%, The infection rate of children under fourteen years of age was 71.6%. Multiinfection was revealed in 1 268 persons, the mixed, infection rate was 13.7%. Fourteen species of human parasites were detected, including four nematodes, three cestodes and seven protozoa. The main parasite species is Ascaris, with an infection rate of 61.6%. The results provided data of the distribution of human parasites, the infection in different age and sex groups, and parasite fauna in studied areas, which may serves as a useful guide for the future prevention and treatment of parasitic infections.