The invention discloses a mine end data monitoring device for coal mines. The mine end data monitoring device comprises a protocol analysis unit, a communication unit and a data processing unit, wherein the protocol analysis unit is used for intercepting data of a single well system through a downhole substation data bus, analyzing the data and sending the analyzed data to the communication unit, the communication unit is used for receiving the data sent by the protocol analysis unit, sending the data to the data processing unit, receiving the data processed by the processing unit and sending the processed data to a remote monitoring platform, and the data processing unit is used for receiving the data sent by the communication unit so as to real-timely perform data transceiving, uploading, storage and restoration. The monitoring device can be used for replacing functions provided by downhole data generation software of a coal-mine gas single well monitoring system, data of the coal-mine gas single well monitoring system can be intercepted, the function of data uploading can be provided for a coal mine safety remote monitoring total management system, and the safety supervision is beneficially supplemented.