The invention discloses a mounting support of an engine. The mounting support comprises an engine stabilizing plate, upper supports, engine fixing frames, lower supports and dampers. The upper supports are fixed to the engine stabilizing plate. The dampers are connected to the upper supports. The engine fixing frames are connected to the dampers. Lower support bases are fixed to the engine stabilizing plate. The dampers are mounted on the lower support bases, connected to the lower supports and mounted inside the lower supports. The mounting support of the engine has the characteristics of high security coefficient, good damping effect and light weight.