The invention discloses a full-electronic computer interlocking system based on redundancy of executive modules and belongs to the technical field of computer interlocking. The full-electronic computer interlocking system comprises an interlocking machine level, a communication machine level and an executive module level. As for a host-backup system, two communication machines and the multiple executive modules connected with the communication machines form a communication and execution subsystem. One interlocking system can be provided with the multiple communication and execution subsystems according to the scale of a station. The interlocking machine level and the communication machine level are connected in a crossing redundancy mode, and the two-line executive modules in the communication and execution subsystem are connected in parallel and then connected to outdoor equipment. According to the full-electronic computer interlocking system, the interlocking machine level, the communication machine level and the executive module layer connected below the communication machine level form the redundant relationship of the host-backup system, and the usability of the computer interlocking system is improved.