You can sleep on your side after artificial hip replacement, but within 3 months, you should pay attention to the soft pillow between your legs when you lie on your side to prevent dislocation of the hip joint. There are certain requirements for sleeping posture after artificial hip replacement, and in the early stage, it is generally recommended to lie flat, and place a triangular cushion between the legs when lying flat to keep the affected limb out of the booth. When lying on the side or turning over, it should be noted that the wound side is on the top to avoid compression of the wound. After the wound heals, you can turn over on both sides alternately, but because the hip joint is still unstable within 3 months, the bone has not completely healed, in order to prevent overflexion and adduction of the hip joint, a soft pillow should be placed between the two legs to minimize the possibility of dislocation of the hip joint. You can sleep on your side normally 3 months after surgery. After the artificial hip replacement surgery, you should take active rehabilitation exercise under the guidance of the doctor to prevent the joint from sticking. However, attention should be paid to gradual and orderly progress, avoid overwork and early weight bearing, and also pay attention to avoid cross-legged and stilt legs and other actions.