Baby has been active may be physiological active, may also be caused by diseases, such as ADHD, etc., the specific analysis is as follows: 1. Physiological reasons: some babies are energetic, active, have a strong curiosity about all kinds of things, easily attracted by new things or the external environment, like to explore, which is good for the healthy development, which is a sign of the baby’s liveliness, do not worry too much. 2. Pathological causes: ADHD, usually leads to the baby can not keep quiet, long time hand and foot movement and involuntary body movement and other symptoms, if the baby exists in the ability of self-control is weak, too much activity, inattentive, emotionally unstable and behavioral abnormalities and other symptoms, should be considered to be suffering from ADHD. There may be other reasons for the baby to be active all the time, so parents are advised to take the baby to the hospital for a comprehensive examination, and treat the symptoms according to the results of the examination.