A hand chain block is a manual lifting and hoisting tool. The hand chain block operates by pulling the manual chain, causing the handwheel to rotate, which presses the friction disc ratchet and brake seat together for rotation. This action turns the long gear shaft, driving the short gear shaft and spline hole gear. Consequently, the hoisting sprocket mounted on the spline hole gear drives the hoisting chain, thereby smoothly lifting heavy objects. It employs a ratchet-friction disc type one-way brake that can self-brake under load. The pawl engages with the ratchet under the action of a spring, ensuring safe operation of the brake. The operation is simple and easy to install. Pulling the hand chain forward means lifting, while pulling it backward results in lowering.