The utility model discloses a sprayer fixed plate for reduce sprayer fixed plate's weight and reduction in production cost, its characterized in that: the clamp plate body and the portion that compresses tightly are for taking out the shell structure. The utility model discloses a clamp plate body and the portion that compresses tightly fix making the weight of fixed plate lighter for taking out the shell structure at the assurance sprayer, satisfy engine part's lightweight designing requirement.