The invention belongs to the technical field of hybrid power automobiles, and particularly relates to a power transmission device. The forward wheel drive dual-mode hybrid power transmission device comprises an engine input shaft (1), a torsional damper (2), a first gear (3), a power distribution planetary mechanism, a planetary mechanism output gear (4), an input shaft (5), an output shaft (6), a second gear (7), a third gear (8), a differential (9), a shell (10), a first electric motor (E1), a second electric motor (E2), a second electric motor shaft (11), an output gear (13), a fourth gear (14), a clutch mechanism and a one-way clutch (18). According to the forward wheel drive dual-mode hybrid power transmission device, the axial dimension of the transmission device is decreased, the torque and power requirements of the electric motors are lowered, the transmission efficiency is high, and under the pure electric working condition, an automobile can be driven through the first electric motor and the second electric motor at the same time.