This is a randomized, double-masking, placebo-controlled, multicenter clinical trial. The 72 subjects will be divided into experimental group and control group. The experimental group will be given Ginkgo biloba dropping pills (63mg / pill) , oral, 5 pills each time, three times a day. The control group will be given mimetic drug of ginkgo biloba dropping pills (63mg / pill) , oral, 5 pills each time, three times a day, for 12 weeks to evaluate the effect of Ginkgo biloba dropping pills on coronary heart disease Efficacy and safety of stable angina pectoris with depressive symptoms.
To evaluate the clinical efficacy of Ginkgo biloba dropping pills on improving the frequency of angina pectoris and the life quality of patients with stable angina pectoris and depression symptoms on the basis of the best western medicine treatment; Study on the clinical pharmacological mechanism of Ginkgo biloba dropping pills.