Ear circumference depression is one of the symptoms of pediatric Diegeorg’s syndrome. Diegeorg’s syndrome, or congenital absence or underdevelopment of the thymus gland, is a primary cellular immunodeficiency disease. Children with immunodeficiencies can be prevented by vaccination. Live attenuated vaccines already in clinical use include: live attenuated BCG vaccine, live attenuated measles vaccine, live attenuated hepatitis A vaccine, lyophilized live attenuated hepatitis A vaccine, lyophilized live attenuated varicella vaccine, live attenuated encephalitis B vaccine, live attenuated rubella vaccine, live attenuated mumps vaccine, live oral polio vaccine, and live oral attenuated rabies vaccine. Since many immunodeficiency diseases cannot be diagnosed and screened at an early stage, parents of children with recurrent perianal abscesses, recurrent serious infections, and other immune abnormalities can choose inactivated vaccines by injection on the principle of “informed, voluntary, and self-funded”.