To study the therapeutic effect of Yishen Tiaojing Decoction（益肾调经方）on kidney deficiency type of hypomenorrhea based on“consolidating basis and cultivating primordial Qi”theory of Xin’an physicians.

A total of 116 patients with hypomenorrhea were selected and divided into observation group（58 cases）and control group（58 cases）by the random number table method. The control group received conventional western medicine treatment，and the observation group was given conventional western medicine combined with Yishen Tiaojing Decoction，and both groups were treated for 3 courses with 1 menstrual cycle as 1 course of treatment. The clinical efficacy after treatment，TCM syndromes scores，pictorial blood loss assessment chart（PBAC）score，sex hormones［follicle stimulating hormone（FSH），luteinizing hormone（LH），estradiol（E₂），progesterone（P）］and uterine spiral artery blood flow parameters［arterial pulsatility index（PI），resistance index（RI），peak systolic velocity（PSV）］before and after treatment were compared between the two groups，and the safety was analyzed in both groups.

The clinical efficacy in the observation group was 84.48%（49/58），which was higher than that（68.97%，40/58）in the control group（P<0.05）. After treatment，the scores of TCM syndromes and total score，the levels of serum FSH and LH，the values of PI and RI were decreased in both groups，and the above indicators were lower in the observation group（all P<0.05）. The menstrual period，PBAC score，the levels of serum E₂ and P and the value of PSV in both groups after treatment were significantly increased（P<0.05），and the observation group had longer or higher indicators（all P<0.05）. The incidence rate of adverse reactions revealed no statistical difference between observation group（10.34%，6/58）and control group（8.62%，5/58）（P>0.05）.

Based on“consolidating basis and cultivating primordial Qi”theory of Xin’an physicians，the application of Yishen Tiaojing Decoction in the treatment of patients with kidney deficiency type of hypomenorrhea is beneficial to improving the sex hormone secretion，regulating the uterine spiral artery blood flow parameters and effectively relieving the symptoms such as few menstruations volume，and the therapy has certain safety.