Newborn sucking weakness refers to the newborn milk significantly reduced, seemingly do not know hunger, sucking time is short and weak, easy to choke on milk. Chinese medicine believes that the main factor for the occurrence of this disease is that the child is mostly congenitally endowed with insufficient qi and blood is not full, the yuan yang is not vibrant, followed by improper postnatal care, feel the cold, so this disease in the north of the high incidence of cold seasons. Western medicine believes that the pathogenesis of this disease is not yet fully understood, can be caused by cold, preterm labor, infection, asphyxia and other causes. Differential diagnosis of neonatal suckling weakness and reduction: neonatal underfeeding: to eat, to cry, to move, is a child’s birth need. Eating less, crying less and moving less is a special manifestation of illness in newborns. There are many non-infectious and infectious causes of hyporeactivity, commonly known as “sleeping up”. Neonatal hyporesponsiveness: Decreased responsiveness is a group of clinical symptoms that includes some degree of impaired consciousness, decreased muscle tone, decreased body movement, weak crying and weak sucking. Newborns not only in the central nervous system disease show low responsiveness, other such as severe infection shock dehydration, acidosis metabolic disorders, anemia hypothermia and respiratory failure, etc, can show low responsiveness clinically low responsiveness is often used to determine the degree of severity of various diseases a manifestation.