The utility model discloses a screw safety cover and rotor craft, screw safety cover include safety cover and last safety cover down, and lower safety cover includes the base and connect the protection part on the base that keeps away from the one end kickup of base and be connected with first bracing piece, upward the safety cover can be dismantled with lower safety cover and be connected, goes up the safety cover and forms the protection zone down between the safety cover. The screw safety cover can absorb collision kinetic energy through warping, alleviates the destruction to the screw, down the safety cover both can the exclusive use, also can use with the combination of last safety cover, and the protection zone provides all -round protection for the screw, can dismantle the setting of connection for the installation is simple and convenient with the dismantlement, is convenient for maintain, has simplified the structure of safety cover, and the production and processing of beingconvenient for has reduced the processing cost. The utility model provides a rotor craft adopts above -mentioned screw safety cover, can provide all -round protection for the screw, and then protection rotor craft safety.