The invention discloses an efficient spraying device for engine bearing bushes. The efficient spraying device for the engine bearing bushes comprises an upper spraying feeding device and a lower multifunctional rotating clamp, and is characterized in that the upper spraying feeding device comprises a lifting table frame, a spraying device is fixed on the lifting table frame, the spraying device isprovided with a nozzle, a coating is input into the spraying device and is sprayed out by the nozzle, the lower multifunctional rotating clamp comprises a rotating platform, a fixing device is arranged on the rotating platform, the engine bearing bushes to be sprayed are arranged in the fixing device, every two engine bearing bushes are arranged to be in a group to be spliced into a circle shape,the plurality of groups of engine bearing bushes are stacked up and down to form a cylinder, an upper opening of the cylinder right faces the spraying feeding device, and a coil for generating a high-frequency electromagnetic field is arranged on the outer side of the fixing device. According to the efficient spraying device for the engine bearing bushes, a required area is small, moreover, a large amount of mechanical arm equipment and positioning devices are saved, the effect of low direct investment cost is brought, and problem that secondary machining is needed due to the fact that the coating is sprayed on the side surfaces of the bearing bushes is solved.