摘要Objective: To observe the clinical effect of electroacupuncture on improving polycystic ovary syndrome (PCOS) of kidney deficiency and phlegm dampness type and serum oxidative stress level. Methods: There were 68 patients with polycystic ovary syndrome were randomly divided into observation group (34 cases) and the control group (34 cases), The observation group was treated by electroacupuncture, while the control group was treated by placebo electroacupuncture. Combined with the evaluation of menstrual cycle, menstrual color, quality, quantity and TCM symptom integral index, the difference of curative effect between the two groups was observed, and the levels of peripheral blood, sex hormones, insulin resistance and oxidative stress were detected before and after treatment for 3 months. Results: The total effective rate in the observation group was better than that in the control group (P<0.01); After intervention, serum LH, FSH, E2 and LH/FSH in the observation group were significantly different from those before intervention. The D values of serum LH, FSH, LH/FSH and E2 before and after intervention were significantly different between the two groups (P<0.01); Comparing the level of androgen, the serum A4 and T in the observation group were significantly different from those before intervention (P<0.01); After intervention, there was a significant difference in serum A4 and T between the two groups (P<0.01), and there was a significant difference in D value between the two groups before and after intervention; There was a difference in insulin resistance in the observation group before and after intervention (P<0.05), and there was a significant difference in D value between the two groups before and after intervention (P<0.01); After the intervention, the serum SOD, MDA, ROS in the observation group were significantly different from those before the intervention; After intervention, the results of serum SOD and ROS in the observation group were significantly different from those in the control group; There was no significant difference in serum MDA results. There were significant differences in SOD, MDA, ROS between the two groups before and after intervention. Conclusion: Electroacupuncture can improve oxidative stress injury, insulin resistance and hyperandrogenism in PCOS patients.