The invention provides an electromagnetic transient real-time simulation method and device for a new energy field station. The method comprises the steps of calculating the reactance and resistance ofa collection line segment between adjacent new energy power generation units based on an acquired series connection actual model of the new energy field station; constructing a new energy field station parallel equivalent model based on the new energy power generation unit access point and the reactance and resistance; and performing electromagnetic transient simulation on the new energy field station based on the new energy field station parallel equivalent model. According to the method, the simulation speed is high, the occupied simulation resources are small, and the large-scale simulation of the new energy field station can be achieved. According to the method, the new energy field station parallel equivalent model is constructed based on the new energy field station series actual model, the simulation speed of the real-time simulation of the new energy field station is greatly increased, and the simulation precision and accuracy of the same original series collection mode are achieved.