The invention belongs to the technical field of automobile accessory machining, and particularly relates to a cleaning device for machining of a steel plate spring guide seat for an automobile. The cleaning device comprises a cleaning tank and a mounting cross beam arranged above the cleaning tank, the interior of the cleaning tank is sequentially divided into an alkali liquor cleaning tank, a spraying washing tank and an oil immersion tank through a first vertical partition plate and a second vertical partition plate, a material turning device which moves up and down is arranged above the alkali liquor cleaning tank, a first grid-shaped horizontal object placing plate is arranged at the bottom of the spraying washing tank, an upper spray pipe and a lower spray pipe are sequentially arranged at the positions, located in the spraying washing tank, of the side wall of the cleaning tank from bottom to top, an electromagnetic lifting device is arranged above the spraying washing tank, a second grid-shaped horizontal object placing plate is arranged at the bottom of the oil immersion tank, an inclined upward conveying belt device is arranged at the position, located above the second grid-shaped horizontal object placing plate, in the oil immersion tank, and the conveying belt device extends out of the cleaning tank. According to the cleaning device, the defects in the prior art areovercome, full-automatic cleaning is achieved, efficient and energy-saving effects are achieved, moreover, the contact between workers and washing chemical products is avoided, the working environmentof the workers is improved, and the healthy and environment-friendly effects are achieved.