本文根据血吸虫童虫按时从小白鼠肝脏移行至腸系膜靜脉的規律,以及有效药物抑制童虫发育和延緩其“腸移”的現象,提出了一个比“重虫长度”初篩法的指标更明确而操作更簡便的初篩方法——“腸移”法,感染尾蚴的小白鼠于感染当日起,口服药物14天后解剖2—3鼠,如童虫皆不发生“腸移”,可认为該药有抑制童虫发育的作用或可能的杀虫作用。 In this paper, according to the rule that Schistosoma japonicum migrates on time from mouse liver to mesenteric vein, and the effective drugs inhibit the development and delay the development of squirrels, we proposed a more specific Simpler screening method - “bowel shift” method, the mice infected with cercariae on the day of infection, oral administration of 14 days after the dissection of 2-3 rats, such as siblings did not occur, “bowel shift” can be considered the drug Inhibit the development of the role of squirrels or possible insecticidal effect.