The invention provides a comprehensive load model modeling method considering load low voltage release features. Feature parameters such as critical voltage when large-amount load removing is started, the time delay of the time when the voltage falls to the critical voltage and the time when the large-amount load removing is started, and the proportion of the loads with low-voltage protection in total loads are introduced into an existing comprehensive load model considering a power grid to describe disturbance middle load low voltage release features. By the model, the defect that a traditional dynamic load model cannot describe the load low voltage release features is overcome, and accuracy and credibility of power system simulation calculation are increased.