Eight-month-old babies like to jump and scream at the same time most of the physiological response is normal, and the baby is more lively and active related; some babies may be caused by pathological factors, such as calcium deficiency or central nervous system diseases, and so on. It is recommended that the cause of the disease be clarified in a timely manner, and that symptomatic adjustment or treatment be given as soon as possible. 1. Normal physiological response: because the eight-month-old baby has just learned to crawl, more lively and active, full of curiosity about new things, the above symptoms are normal phenomenon. Parents should not worry too much, pay more attention to the baby’s safety, to avoid bruises or falls. 2. Pathological factors: calcium deficiency is common, due to eight-month-old babies usually add the low content of calcium in the complementary food, parents did not give the baby calcium supplements in time, resulting in a prolonged lack of calcium in the body, interfering with the function of the nervous system, showing the above symptoms. It is recommended that timely laboratory tests, according to the results of the doctor’s orders to give symptomatic treatment of calcium. In addition, eight-month-old babies with central nervous system diseases may also show the above symptoms, such as meningitis, cerebral palsy, etc. It is recommended that parents pay attention to observe whether the baby has consciousness, cognition and motor abnormalities, and if necessary, emergency medical treatment should be implemented as soon as possible. Parents are advised to strengthen the daily care of their eight-month-old babies, consult a professional doctor to understand the normal development of their babies, and consult a doctor when abnormalities are found to avoid delays.