The sucking reflex appears between 0 and 3 months of age, and the infant will suck when something is placed in the infant’s mouth. It disappears on its own 3-4 months after birth and is gradually replaced by active feeding movements. However, during sleep and on some other occasions, infants still show spontaneous sucking movements for a period of time. A positive sucking reflex is indicative of a cortical disorder if it persists after 1 year of age. The presence of the sucking reflex in non-childhood is most often seen in frontal lobe lesions, pseudobulbar palsy . A positive sucking reflex indicates the presence of a disease, which is a serious health and life threatening condition. So, what should be done to prevent and treat a positive sucking reflex? Patients with positive sucking reflex should be detected and treated early to prevent further lesions. Psychologists say that when babies are hungry, lonely, or crying, this finger and toe sucking behavior can largely stabilize them. As babies grow older and are exposed to more and more of the colorful world, their attention will naturally shift from fingers and toes to other things. But parents should pay attention, if the baby sucking too often to control and guide his attention, at the same time must ensure that the baby hands and feet clean and hygienic, so that the baby can grow up physically and mentally healthy.