The invention belongs to the technical field of energy power equipment and relates to a load isolating hybrid pure electric driving device. A motor is connected with a power battery; the power battery is connected with a generating unit through a first three-port electric energy distributor; the first three-port electric energy distributor is connected with a second three-port electric energy distributor that is connected with a third three-port electric energy distributor; a first energy storage battery is connected with the power battery orderly through the second three-port electric energy distributor and the first three-port electric energy distributor, and a second energy storage battery is connected with the first energy storage battery orderly through the third three-port electric energy distributor and the second three-port electric energy distributor; the load isolating hybrid pure electric driving device is simple in structure, high in safety, high in efficiency, low in cost, long in service life, convenient for management, and wide in application range.