Objective：To observe the clinical curative effect of Shensong Yangxin capsules combined with vitamin D in adjunctive therapy for primary hypertension.Methods：Selected 112 cases of patients with primary hypertension，and divided them into the control group and the observation group randomly according to random number table，56 cases in each group.Patients in both groups were given routine dyazide and vitamin D，while the observation group was additionally receivedShensong Yangxin capsules.Treatment for both groups lasted for 4 weeks.Compared the clinical curative effect and symptomatic effect，and observed the content changes of 25-hydroxy vitamin D3in serum and its safety，etc.Results：After treatment，the total effective rate of clinical curative effect was 76.8%in the control group and 94.6%in the observation group，the difference being significant(P＜ 0.05).The improvements of headache，dizziness，insomnia，and myasthenia of limbs in the observation group were better than those in the control group，differences being significant(P＜0.05).There was no obvious adverse reaction in both groups，which suggested the safety of the therapies.Conclusion：Based on routine therapy，the additional application of Shensong Yangxin capsules combined with vitamin D in adjunctive therapy for primary hypertension can evidently control the blood pressure and improve clinical curative effect with preferable safety.