The present invention discloses an output control device based on triple redundancy. An output control circuit is connected with three sequence control signal ends through three first photoelectric isolation circuits; the output control circuit has three output ends connected with an output voting circuit, the input end of the output voting circuit is connected with a power supply; the output control device based on triple redundancy also comprises a digital quantity output load positive end and a digital quantity output load negative end; a current Hall chip is connected between the digital quantity output load positive end and the output end of the output voting circuit; two inductors are connected in series between the digital quantity output load negative end and the output end of the output voting circuit; and each inductor is connected in parallel with one output stoping detection circuit. The output control device based on triple redundancy employs parallel output of three sequence output channels, a logic output voting is built by a pure hardware circuit, the stability and the reliability are high, the channels themselves are provided with stoping diagnosis circuits and detection circuits of driving of the output load, the whole diagnosis circuit is output, and the diagnosis coverage rate can reach 99%.