The newborn’s footplate blood is screened for conditions such as congenital hypothyroidism, phenylketonuria, and G-6-PD deficiency. Generally after the birth of newborns need to be carried out on the sole of the foot plate blood examination, known as the collection of heel blood, the collection of heel blood is the newborn’s genetic metabolic diseases and congenital endocrine disease screening, mainly to determine the presence of congenital hypothyroidism, phenylketonuria and other diseases. If the screening is normal after heel blood collection, no special treatment is needed. However, if the screening result is abnormal, it is recommended to consult a specialist clinic in time to avoid generalized or lifelong mental impairment. Since the above diseases often do not show typical symptoms in infancy and can have lifelong sequelae, parents are advised to complete the screening in time after the birth of their babies, and to consult a doctor for any abnormalities and interventions as advised by the doctor.