Objective To observe the curative effect of Modified Gongwaiyun Ⅱ on extrauterine pregnancy.Methods 69 patients of extranterine pregnancy were recruited into a treatment group and a control group randomly. 34 patients in the treatment group were treated with modified Gongwaiyun Ⅱ and 35 patients in the control group were treated with Gongwaiyun Ⅱ, with therapeutic course being one week. Values of β-HCG of serum at the beginning of the treatment,age, days of menelipsis, effective rate, average value of serum β-HCG decreasing and percentage at every course of the treatment, and the number of therapeutic courses were observed. Results There are significant statistic differences between the treatment group and the control group at the number of therapeutic courses, and average value of serum β-HCG decreasing and percentage at every course of the treatment, with P＜0.05. Conclusion The curative effect of modified Gongwaiyun Ⅱ had superiority to traditional Gongwaiyun Ⅱ.