Objective With the method of randomized controlled trials， we observed “Baihe Dihumg Decoction” and analyzed its result the intervention of yin-deficiency type of psychological health groups. Methods Determine the diagnostic criterias of Yin type of psychological sub-health. We randomly assigned the qualified and unqualified patients proportionally 2 to 1 into treatment group and comparison group. Patients need to fill Symptom Checklist（SCL-90）. The comparison group took 20g free fried particles lily， 20g rehmannia glutinosa mixing with warm water twice a day， a month as a treatment. The treatment group took 20mg oryzanol three times a day， 30 min after meals. To observe the symptom elimination rate， change of SCL-90， efficacy and adverse reactions of these two groups. According to SPSS17. 0 database， we used ANOVA to analyze the groups’ discrepancy， test to compare the average data， chi-square test（χ2） to compare the frequency. Results 1. The frequency of psychological sub-health symptoms， such as lack of energy， fatigue， insomnia， melancholy， anxiety and testiness， P＜0.05， this group was difference. 2. the symptoms of yin-deficiency， such as insomnia， constipation， fatigue and testiness， P＜0.05. the group was diference. 3. The change of SCL-90 before and after treatment：treatment group had a significant effect on improving somatization， enforcement， interpersonal sensitivity， hostility， especially on anxiety， depression and psychotic. Conclusion Baihe Dihumg Decoction can alleviate significantly the clinical symptoms of psychological sub-health condition patients.