Abstract: The inhabitants with positive eggs of whipworm and ascaris in a village of Jiangdou County were examined and treated with different antihelmintic drugs twice a year. The un-cured population were treated by drug administration once again. On an average the efficiency of drug treatment (cure ratex treatment rate) was 56. 7% in whipworm and 64. 5% in ascaris. The program had been carried out for five years. The positive rate of eggs of whipworm and ascaris in the population decreased from 64. 7% and 52. 1% to 2. 7% and 4. 1%,respectively, the mean increase in infection rates among population at 5 or 7 months after treatment was 2.68(0.86-5.74)% and 6. 94(1. 72-17. 27)% .respectively.