Standing lumbar pain lying down is not painful, this situation is usually due to the lumbar muscle tissue has a strain or strain, cold, will form a sterile inflammatory lesion in the muscle tissue of the lumbar region. In order to maintain the stability of the whole body when standing, the lumbar muscles are in a state of tension and contraction, which will stimulate the chronic inflammatory lesions, so it is easy to have painful symptoms. But after lying down the muscle tissue becomes relaxed, the local lesion is no longer stimulated, so the pain symptoms will become less obvious. After this happens, try to choose bed rest, try to keep the lumbar muscles relaxed, it is best to put soft pillows on the back of the thighs to keep the knee and hip joints flexed, and it is best to keep the hip joints in a state of external rotation and mild abduction, which can help the relaxation of the lumbar muscles.