BACKGROUND:　Postpartum　hemorrhage　(PPH)　is　the　most　common　cause　of　parturient　death　worldwide　[1].　However,　most　cases　of　PPH　can　be　avoided.　OBJECTIVE:　This　paper　employs　statistical　methods　to　screen　risk　factors　of　PPH　and　calculate　relevant　parameters.　METHODS:　Multivariable　logistic　regression　analysis　was　applied　to　obtain　the　regression　equation　and　odds　ratio　(OR)　value.　The　determined　risk　factors　were　assigned　comprehensive　and　reasonable　scores　according　to　scientific　relevance　and　reasoning　according　to　the　OR　value.　P-PPH　values　were　calculated　in　order　to　assess　the　morbidity　of　PPH.　RESULTS:　The　scores　of　pregnant　women　could　be　intuitively　used　to　show　the　risk　of　getting　PPH.　CONCLUSIONS:　Through　the　above　methods,　a　comprehensive　risk　evaluation　method　of　detecting　PPH　was　developed.