Sleeping feeling sore legs can not sleep is mainly due to two reasons: 1. Because of more leg activity during the day, muscle consumption of energy and electrolytes is relatively large, resulting in a decline in local energy supply, and inflammatory metabolites and lactic acid get accumulated. At the time of sleep, due to the slowing down of blood circulation. The amount of buildup is more, so it is easy to have sore legs to sleep. 2, due to sitting for too long during the day, and the legs are cooled. Because in the sitting position, the blood vessels on the back side of the thigh will be squeezed and stimulated, resulting in a decline in local arterial blood supply, especially the position of the leg in contact with the edge of the chair pressure is relatively large, easily leading to a decline in vascular blood supply. In addition, venous return will also be correspondingly reduced, so it is easy to lead to the accumulation of lactic acid and metabolic products, the local energy and electrolyte supply decreases, so it is easy to appear the feeling of acidity, tenderness, sleeplessness. The following measures should be taken in response to the above situation: 1. In the flat position, you can put soft pillows behind the knee joints on both sides to keep the knee and hip joints flexed and the muscles of the legs relaxed. When sleeping at night, be sure to pay attention to keep warm and never get cold. 2, in the side lying position, you can put soft pillows between the bilateral knee joints and calves to keep the lower limbs parallel, but also to avoid muscle fatigue.