摘要： Shandong had been the most highly endemic area of bancroftian filariasis in our country.Surveyin the 1950'S showed an average mierofilariae rate of 7.1％ and a rate of 7.5％ with positive signsamong the population.After control measures were taken,the annual microfilaremia rate dropped to1(?),reaching the standard of basic elimination of bancroftian filariasis.It has become an importantsubject in the later control stage to treat patients with signs and symptoms.In order to carry out