A pregnant woman screening method based on pulse waves comprises the steps that 1, pulse waves are acquired; 2, pulse wave parameters are obtained, wherein the parameters include the total time of a pulse wave pulse period and pulse wave conduction time; 3, the pulse wave parameters are converted into modeling indexes through characteristic engineering, and judgement is performed through the modeling indexes. The method can be repeatedly adopted, the influence of outside factors is smaller, the accuracy rate is high, and the detection cost is low.