The utility model provides a disk PMSM connects and installation device. The utility model discloses a motor is disk PMSM, the input shaft lug connection of motor shaft and reducing gear box, motor installation device's damping device is used for eliminating stress between disk PMSM operation in -process motor and the reducing gear box, motor installation device includes support, fixed plate, damping device, damping device is the shock pad, support fixed mounting is in the side of base, and fixed plate fixed mounting is on the support, the fixed plate both ends are C type groove in opposite directions, and insert respectively at the base anchor both ends of motor in the C type groove at fixed plate both ends, base anchor's the upper and lower shock pad of installing respectively. The beneficial effects are that, adopt the motor direct drive, high transmission efficiency, set up damping device among the motor installation device, can effectively eliminate the produced vibrations of motor and reducing gear box lug connection and to the influence of motor, eliminate the stress between motor and the reducing gear box, realize energy saving and consumption reduction, improve overall efficiency's purpose.