The habitant area, the incidence of hypertension, atrial fibrillation and dilated cardiomyopathy, age, BMI, number of members of the household, RBC counts, MPV, PDW, WBC counts, HDL-C, apolipoprotein A, TBIL, DBIL, TP, albumin and FG showed no significant difference between the heart failure patients with depression and ones without depression. The gene discussed is ALB; the disease is atrial fibrillation.