Abstract: This article deals with the determination of specific IgG, IgM and IgE to soluble egg antigen in schistosomiasis japonica to assess the therapeutic efficacy of antischistosomal drugs. It was found that 97.6% of the proved cases were positive by ELISA, while all of the sixty-five patients other than schistosomiasis were negative. Follow-up stool examinations of 131 patients for 6-8 months showed that 117 cases (89.3%) turned negative after pyquiton treatment, and 80.3% of the cases also revealed IgM negative. In this context, IgM negatives following chemotherapy of schistosomiasis meant an effective treatment. 48 out of 50 cases showed comparable results after simultaneous capillary and venous blood samples, so capillary method turned out to be one of the choices in field studies.