IvaBradinE to Treat MicroalbumiNuria in Patients With Type 2 Diabetes and Coronary Heart Disease

Inclusion Criteria: * 1\. Type 2 diabetes and coronary heart disease; * 2\. Urinary albumin excretion: 30-500mg/24h; * 3\. Sinus rhythm, and resting heart rate ≥ 70bpm; Exclusion Criteria: * 1\. Renal dysfunction defined as eGFR \< 30ml/min/1.73m\^2; * 2\. Atrial flutter, and atrial fibrillation; * 3\. Resting heart rate \< 70bpm; * 4\. Combined with non-dihydropyridine CCB; * 5\. UAE\<30mg/24h, or \> 500mg/24h; * 6\. Acute heart failure; * 7\. Low blood pressure (BP\<90/50mmHg); * 8\. Acute myocardial infarction (\<14 days);