Preterm labor may cause convulsions in one-and-a-half year old babies. Symptoms of convulsions in preterm babies may be related to the immaturity of the central nervous system, which predisposes preterm babies to ischemic-hypoxic encephalopathy, or intracranial hemorrhage. These disorders can lead to twitching of the limbs, pallor, and irregular breathing. There may also be signs of persistent high fever, which in turn leads to convulsions. Symptoms of convulsions often indicate that the prognosis is not particularly good, and can easily leave sequelae such as epilepsy, hemiplegia, mental retardation, and hydrocephalus. Therefore, if such symptoms appear, it is necessary to apply nutritional brain cells, use hyperbaric oxygen and other active treatment. If a one and a half year old baby has convulsions, it is necessary to go to the hospital in time for examination and active treatment under the guidance of the doctor, do not delay, so as to avoid danger.