A fixed pulley block is a simple machinery consisting of multiple fixed pulleys. Generally, the fixed pulley block is composed of a plurality of movable pulleys and some fixed pulleys. The fixed pulley can change the force direction, and the movable pulley can save force. Therefore, the combination of the fixed pulley and the movable fixed pulley can both save force and changes the force direction. In general, the more the movable pulley is used, the more labor-saving, but at this time the moving distance of the object will increase exponentially.