The utility model provides a side frock clamp of radiator, its can solve current anchor clamps use when the clamping radiator comparatively loaded down with trivial details, the technical problem of clamping inefficiency. It includes bottom plate, its characterized in that: it still includes the positioning seat and compresses tightly the seat, the positioning seat includes the base plate and sets up the backup pad on the base plate perpendicularly, and the base plate lower part is equipped with the spout complex slider with bottom plate upper portion, and base plate upper portion is equipped with the support frame, supports neat lateral part to compressing tightly the seat and is equipped with locating pin and supporting pin, compressing tightly on the seat is fixed in the bottom plate, compressing tightly the seat upper end and be fixed with the cylinder, the piston rod of cylinder is just to the backup pad, and the tip of piston rod is equipped with the briquetting.