Backpack straps for maintenance of appropriate spinal posture

The present invention provides backpack straps for maintenance of appropriate spinal posture to solve the problem of lateral displacement of the conventional backpack straps which slide off the shoulders of the user easily, causing the backpack to move away from the center of the user's body and out of position and further leading to muscle strain and poor standing posture. The backpack straps of the present invention includes two shoulder straps, each having an inner surface. The inner surface has a pectoral muscle area, a clavicle area and a scapula area. A first pad is disposed within the pectoral muscle area, a second pad is disposed within the clavicle area, and a third pad is disposed within the scapula area. When the user is carrying the backpack, the pads secure the two shoulder straps in position on the shoulders and restrict the lateral movement of the shoulder straps to prevent them from sliding off.