Four-gear two-intermediate-shaft double-motor preposed single-planet-row hybrid power system

The utility model belongs to the technical field of hybrid electric vehicles, and particularly relates to a four-gear two-intermediate-shaft double-motor preposed single-planet-row hybrid power system which comprises a clutch, an input front shaft, a first gear shifting executing mechanism, a planet gear set, an input rear shaft, a speed change mechanism, a main speed reducer and wheels. The second motor and the first motor are arranged on the two sides of the input front shaft respectively, the second motor is in power connection with the front end of the first middle shaft, the first middle shaft is sleeved with a first-gear driven gear in an empty mode, and the reverse-gear driven gear is meshed with the first-gear driven gear; a motor intermediate shaft is omitted, a reverse gear and a reverse shaft do not need to be additionally arranged, the gears of all gears can be arranged in a staggered mode through the double intermediate shafts, and the axial length of the assembly is shortened. 本实用新型属于混合动力汽车技术领域，