The invention discloses an actuating mechanism of an AMT transmission of a double clutch hybrid vehicle, comprising the actuating mechanism of a front clutch, the actuating mechanism of a back clutch, a gear select actuating mechanism, a gear shift actuating mechanism, a control unit, a hydraulic oil circuit and an attachment unit; the actuating mechanism of the front clutch comprises a control oil cylinder of the front clutch, the piston rod of which is connected with the front clutch, a front proportional flow electromagnetic valve, which is communicated with the oil sump of the control oil cylinder of the front clutch, and a front clutching position sensor, which is arranged on the control oil cylinder of the front clutch to check and output the position signal of the front clutch; after starting, the status of the entire vehicle is confirmed according to every sensor signal; when recovering braking energy, the control signal of the actuating mechanism of the front clutch is output; when shifting, the control signals of the actuating mechanism of the back clutch, the gear select actuating mechanism and the gear shift actuating mechanism are output; when entering into other working conditions, the control signals corresponding to the working conditions are output. The invention also discloses a control method of the actuating mechanism of the AMT transmission of the double clutch hybrid vehicle.