The embodiment of the invention discloses a load state detection method and device, and an electronic device. The load state detection method that is applied to a circuit system including one path ofor multiple paths of parallel loads comprises: detecting a current electrical characteristic value of a main path of the circuit system; and determining working states of g one path of or multiple paths of loads based on the current electrical characteristic value. Therefore, the working states of the loads in the circuit system are determined in real time with the low costs; and when the load state detection method and device are applied to the internal circuit system of the electronic device, the size of the electronic device is not increased.