Objective: To investigate the therapeutic effect of Dydrogesterone combined Bushen Ningxin Decoction and therapy with Psychological intervention in treating threatened abortion. Methods: 76 patients with threatened abortion treated in our hospital from January 2015 to June 2016 were randomly divided into two groups. 37 patients in control group were treated with Dydrogesterone and Psychological intervention. 39 patients in observation group were treated with Bushen Ningxin Decoction in addition to the thera...