A 2D simulation of electrical and optical characteristics of InGaN/GaN multiple quantum well blue light-emitting diodes by APSYS software with a dot-well model and well model are investigated. It shows that I-V and electrical luminescence simulation results based on the quantum dot model are in better agreement with the experimental data than that based purely on quantum well model. Moreover, simulation result also suggest that the non-equilibrium quantum transport plays an important role in the InGaN/GaN multiple quantum well light-emitting diodes.