The invention discloses a full section broken belt protector for a belt conveyor, which belongs to the field of conveyors and mainly comprises a stand, an upper catching mechanism, a lower catching mechanism and a plurality of sensors, wherein the upper catching mechanism and the lower catching mechanism are mounted on the stand, and the sensors are mounted on a conveying belt; the sensors transmit collected signals to a PLC (Programmable Logic Controller) which sends a signal, firstly a transmission mechanism enables a revolution oil cylinder to work, a compaction oil cylinder works after time delay, and the upper broken belt catching mechanism compresses the conveying belt; and meanwhile, the revolution oil cylinder pushes the upper pressing block assembly, a pin shaft and a connecting bar of the upper pressing block assembly push the lower broken belt catching mechanism to move, and the lower broken belt catching mechanism quickly catches a lower conveying belt, thereby realizing the full section broken belt production of the conveyor. The full section broken belt protector for the belt conveyor can ensure the safety of machines, equipment and workers, and avoid the loss of state property.