Children often shaking hands and feet in bed, may be physiological shaking, or due to epilepsy, lack of trace elements caused, it is recommended to promptly consult a doctor to identify the causes, corresponding treatment. Some children have late myelination of the cerebral cortex, so external stimuli cause nerve impulses, which are slow to enter the brain and do not easily form obvious excitation foci in the cortex, resulting in increased muscle tone and involuntary trembling. The muscle tension caused by excessive exercise before going to bed and muscle relaxation after going to sleep can cause limb tremors, if there are no other abnormalities generally do not need to deal with, with age can recover on their own. The first one is the lack of vitamin B, vitamin D and calcium, which can affect the metabolism and nerve excitation and cause muscle contraction. It is recommended to follow medical advice to supplement trace elements, such as oral vitamin B1, vitamin D and calcium. Precautions 1. Ensure balanced nutrition, proper supplementation of trace elements, more fruits and green vegetables; 2. Relax muscles before bedtime, such as stretching exercises. Avoid bright light and noise stimulation when sleeping to improve sleep quality.