The invention discloses a machine pump group state on-line monitoring system. The machine pump group state on-line monitoring system comprises a signal collection module, a signal collection processing module, a database module, a master control and interface module and a remote monitor. After the system is used, the operation state and parameters of detected equipment are collected in real time,the collected data are processed and analyzed in real time, data and analysis results are transmitted to the remote monitor through an industry local network in time, broken-down machine pumps are correspondingly handled by operators according to the data and the analysis results provided by the system, meanwhile, the signal collection processing module uses two processors, one of the processors is responsible for sampling control and effective value calculation, and the other processor is responsible for data storage and man-machine interaction. The system is simple and flexible, the samplingprecision is improved, in addition, users can check the equipment state and set equipment parameters through display interfaces, remote monitoring and remote maintenance are achieved, and the performance of the state monitoring system is greatly improved.