The invention relates to an energy storage grid-connected system integral state monitoring method. The energy storage grid-connected system integral state monitoring method monitors running state of devices to be measured in real time and comprises the following steps: (1) an upper computer performs parameter allocation on a signal collecting module, then the signal collecting module collects temperature and humidity signals and voltage and current signals of the devices to be measured in real time and transmits and stores the temperature and humidity signals to the upper computer; (2) a real-time embedded type operating module performs real-time calculation on collected voltage and current signals, acquires required measuring values, and transmits and stores the calculated results to the upper computer; and (3) the upper computer performs graphical display on received data, simultaneously acquires current running state of the devices to be measured according to historical data, and generates and outputs monitoring reports or report forms. Compared with the prior art, the energy storage grid-connected system integral state monitoring method has the advantages of being good in real-time and high in operating efficiency, guaranteeing safe and stable running of the energy storage system and the like.