Aim: To explore the expression and clinical significance of DGCR8 in children with congenital heart disease(CHD). Methods: The blood samples of 40 children with CHD and 40 healthy children were collected,respectively.qRT-PCR method was used to detect the expression of DGCR8 mRNA. The expression of DGCR8 in myocardial tissue from~25 children with ventricular septal defect(VSD) and 16 children with tetralogy of Fallot(TOF) was detected by qRT-PCR and Western blot,and the correlation between DGCR8 and septal d...