The utility model belongs to the technical field of many rotor crafts, a oil moves many rotors power transmission system is disclosed. This oil moves many rotors power transmission system is including installing at the epaxial driving gear of the initiative of engine, the peripheral even just interval meshing of driving gear has a driven gear and steering gear, the meshing of the steering gear outside has the 2nd driven gear, a driven gear and the 2nd driven gear's number total is for being more than or equal to four even number, every be connected with the power transmission mechanism to the screw transmission with engine power on a driven gear and the 2nd driven gear respectively. This oil moves many rotors power transmission system moves unmanned aerial vehicle's the driving system power distribution and the problem of transmission in order to solve the oil that exists among the prior art, and the device simple structure, convenient to use.