Coal gas concentration monitoring method and system

The invention discloses a coal gas concentration monitoring method and system. The method comprises the steps: an acquisition server acquires equipment state information and coal gas concentration data of a coal gas detector, an alarm state value is generated, and the alarm state value and corresponding identification information are forwarded to on-site LED equipment and a remote switch through an on-site switch in a mode of reading and writing a memory mapping table; the remote switch forwards the alarm state value and the identification information to a multipath forwarding server; the multipath forwarding server summarizes the alarm state value and the identification information, source data are acquired, N parts of to-be-distributed data are copied and generated based on the source data, the N parts of to-be-distributed data are subjected to JOSN encoding processing according to a preset JSON protocol, and each part of to-be-distributed data packet is forwarded to each to-be-distributed device through a