The invention belongs to the technical field of electric power, especially relates to one of the power system control technologies, and specifically provides a voltage monitoring system based on FPGA technology and a verification method. The voltage monitoring system comprises a monitoring server, a PT conversion module, and a display, a voltage monitor and a standard device are connected with the monitoring server via GPRS network cables, a relay device is connected between the other terminals of the voltage monitor and the standard device, and the standard device is connected with the monitoring system display. The voltage monitoring system is a 0.05-grade multifunctional apparatus and instrument intelligent remote verification system based on the FPGA, the labor intensity of on-site operation personnel can be greatly reduced, the on-site operating environment is improved, the automatic control level of the detection of voltage monitoring equipment is improved, and the safety index of on-site operation is increased.