The main function of the pear-shaped muscle is to make the thigh externally rotated and abducted. When the pear-shaped muscle is congested, edema and spasm, it will stimulate the sciatic nerve causing radioactive pain in the lower limbs, bed rest can make the pear-shaped muscle fully relaxed, can promote the pear-shaped muscle congestion, edema gradually subside, relieve the stimulation of the sciatic nerve, so as to reduce the sciatic nerve radioactive pain. The contraction of the pear-shaped muscle will squeeze the sciatic nerve, as long as the contraction of the pear-shaped muscle is prevented and the aortic rotation of the hip joint is abducted, the squeezing of the sciatic nerve can be avoided and cause radiological pain symptoms in the lower limbs. Therefore, when lying down, be careful not to actively carry out external rotation and abduction of the hip joint action to avoid adverse stimulation of the sciatic nerve, resulting in sciatic nerve radiation pain symptoms.