Whether or not an infant has congenital heart disease, and what the signs are, is related to the type and severity of the congenital heart disease. Children with mild congenital heart disease, such as small atrial septal defects, ventricular septal defects and arterial ductus arteriosus, are often asymptomatic in the early stages of the disease, and infants behave like normal children, with no special signs. With the prolongation of time or more serious disease, these children often appear growth and development is relatively backward, wasting, sucking no strength, feeding difficulties or infant refusal to eat, choking on milk, usually have shortness of breath or crying after the lips, fingernails bruising, bruising after activities and other symptoms, and do not like to move around, exercise, sweating, pale, and so on. At this time to go to the hospital to check, the doctor will often find a heart murmur, so these can be used as a congenital heart disease baby signs, mild congenital heart disease is generally not obvious.