Two-year-old baby sleep convulsions, may be related to the imperfect development of the nervous system, frightened, vitamin D deficiency, febrile convulsions, pediatric epilepsy, central nervous system infection and other factors, it is recommended to go to the hospital for examination and treatment after clarifying the cause. I, non-disease factors: 1, imperfect development of the nervous system: two-year-old baby if only occasionally twitch, do not exclude the possibility that because the nervous system function is not yet developed, there will be temporary disorders of brain function, resulting in twitching during sleep, belongs to sleep myoclonus, is a normal physiological phenomenon. As the baby grows up, the neurological function gradually develops, the symptoms will improve, but it is recommended to go to the hospital for EEG examination to exclude other diseases; 2, frightened: If the baby is frightened during the day, it may lead to slight convulsions during sleep, it is recommended that parents promptly soothe the baby or accompany the baby to sleep. Second, disease factors: 1, vitamin D deficiency: vitamin D deficiency of children with hand and foot convulsions during sleep, but also accompanied by laryngeal spasms, convulsions and other symptoms, and check the trace elements suggest vitamin D deficiency, calcium deficiency, need to follow medical advice to supplement vitamin D or calcium elements, daily can take the baby appropriate sun exposure, conducive to vitamin D supplementation, to promote calcium absorption; 2, febrile convulsions: due to infection caused by In a short period of time, the baby’s body temperature increases rapidly, the body temperature up to 38 ℃ or more prone to convulsions, will lead to abnormal brain discharge, convulsions and coma symptoms. Need to promptly seek medical attention, follow medical advice to be oxygen, intravenous use of Valium to stop the shock, acetaminophen drugs to reduce fever and other emergency treatment; 3, pediatric epilepsy: seizures, due to abnormal brain discharge, can cause the phenomenon of convulsions, need to be immediately sent to the hospital emergency, controlled by anti-epileptic drugs, the condition is stable, the child needs to improve the EEG examination, in order to guide the later diagnosis and treatment; 4, central nervous system infection: such as Tuberculous encephalitis, viral encephalitis, etc. can infect brain cells through the blood-brain barrier, resulting in abnormal brain discharge and convulsions and fainting. The cerebrospinal fluid examination should be improved and anti-infection treatment should be given according to medical advice, such as isoniazid and streptomycin for tuberculous encephalitis, and antiviral drugs such as adenosine for viral encephalitis.