To study the clinical analysis of Yixingshu capsule in treatment of type 2 diabetes mellitus complicated with angina pectoris due to coronary heart disease. Methods: A total of 88 patients with type 2 diabetes mellitus complicated with angina pectoris due to coronary heart disease were randomly divided into control group and observation group, 44 cases in each group. The control group was treated with conventional anti-angina pectoris and hypoglycemic agent, the observation group was treated with Yixinshu Capsule on basis of the control group, both for 8 weeks. After treatment, the clinical efficacy of the two groups was measured. The levels of blood glucose, blood lipid and platelet activation were measured before and after treatment. Results: The clinical symptoms, the effective rate of ECG and symptom improvement of the observation group were significantly increased compared with the control group and the proportion of ineffectiveness was significantly decreased (P<0.05 or P<0.01). The levels of FBG, 2 h PBG, HbA1c, TG, TC and LDL-C in the two groups were significantly decreased, and the observation group were significantly lower than those in the control group (P<0.05 or P<0.01). The level of HDL-C in the two groups were significantly increased and the observation group was significantly higher than the control group (P<0.01). The levels of PAC-1 and MAR were significantly increased compared with those before the treatment in the control group (P<0.05). The levels of LAP, CD62P, PAC-1 and MAR in the observation group were significantly decreased, and significantly lower than those in the control group (P<0.01). Conclusion: Yixinshu Capsule can significantly improve blood glucose and blood lipid and inhibit platelet activation of patients with type 2 diabetes mellitus complicated with coronary heart disease angina pectoris, improving clinical curative effect.