Babies sleep more and talk less is often taken by some parents as a normal phenomenon, in fact, drowsiness and less speech is the early signs of some diseases, but due to the parents’ lack of alertness plus the child can not fully express their discomfort thus leading to some diseases that could have been detected early are delayed diagnosis and treatment. Diseases that can lead to baby drowsiness and speechlessness are the following types: a. Neonatal sepsis: manifested as drowsiness, reluctance to eat milk, fever or hypothermia, skin blossoms, gray. Second, neonatal jaundice: early performance of the baby’s skin sclera yellow stain, after which can appear drowsy, do not eat, less mobile, at this time the baby has often appeared nuclear jaundice need urgent treatment. Genetic metabolic diseases: early seemingly normal babies suddenly appear lethargy, with no milk, growth stagnation, convulsions, and sometimes a special smell, such as the smell of rat urine, maple syrup. Congenital hypothyroidism: drowsiness after birth, with less milk, easy to choke and cough, small cry, hoarseness, abdominal distension, constipation, infancy may appear developmental delay, intellectual backwardness. E. Episodic sleeping sickness: It is manifested as uncontrollable drowsiness during daytime activities, but can be awakened at any time, and after waking up as usual activities. Intracranial infection: Intracranial infection caused by virus, bacteria, tuberculosis bacillus, fungus, etc. can lead to drowsiness and less speech in children, accompanied by fever, vomiting and headache. Obstructive sleep apnea syndrome: Babies often exhibit snoring and apnea during night sleep, daytime sleepiness, growth retardation, intellectual development is affected, and serious cases have cardiopulmonary insufficiency. Eight, cerebral artery lesions: such as cerebral infarction can be manifested as drowsiness, with aphasia, headache, hemiparesis. Nine, misuse of drugs: some babies can also be drowsy at home misuse of drugs, such as sedatives, digoxin, etc. To sum up, new parents should observe carefully when taking care of their babies, and should seek early medical attention to rule out abnormalities when they find that their babies are drowsy and less talkative.