The utility model discloses a remote measurement monitoring device of a measurement and control device. The remote measurement monitoring device comprises an optical module used for receiving output quantity of a merging unit and remote measurement quantity of the measurement and control device and outputting, a processing module used for processing output data of the optical module and outputting, an Ethernet transmission module used for transmitting output data of the processing module, and a background processing alarm module used for receiving data transmitted by the Ethernet transmission module and giving an alarm after analyzing and processing. The remote measurement monitoring device is guided by the idea of comparing output information of the merging unit and that of the measurement and control device, and two effective values of the device are compared by collecting in real time and analyzing analog quantity measurement value of the measurement and control device and output quantity of the merging unit, thereby judging whether collection and output of the measurement and control device are correct, and thus ensuring correct running of the measurement and control device.