The patient appeared in the phenomenon of foot cramps during sleep, the reason for this phenomenon, is because the patient in the lower limbs during sleep is compressed for a long time, or feet cold for a long time, resulting in the lower limbs of the blood circulation is affected, the appearance of the qi and blood does not run well, there is stagnation of qi and blood stasis, the meridian obstruction, will produce the local muscles have persistent spasms, pain, resulting in cramps. After this situation, the patient can be instructed to move the lower limbs appropriately, and also pay attention to the warmth of the lower limb area, do not catch cold. Traditional Chinese medicine can be used to massage the lower limbs, or with low-frequency electrotherapy, bioelectricity therapy, etc., can accelerate the blood circulation of the lower limbs, promote local metabolism, can reduce or alleviate the phenomenon of foot cramps.