The invention discloses an automatic lipstick filling and screwing production line. The production line includes a conveying belt device, a filing area and a lipstick shell screwing area are arranged on the conveying belt device in sequence, a lipstick filling machine is arranged at the filling area, and a lipstick shell screwing machine for conducting shell screwing on a filled lipstick is arranged at the lipstick shell screwing area; the conveying belt device includes a plurality of conveying steel sheets which are in pivot connection in sequence, each conveying steel sheet is provided with a lipstick placement box, a lipstick placement hole is formed in the top face of each lipstick placement box, clamping air cylinders arranged on the conveying steel sheets are further included, and the side faces of the lipstick placement boxes are provided with clamping openings for power output ends of the clamping air cylinders to penetrate through and for clamping lipstick bottom shells; through the simple and reasonable arrangement, the features of piezoelectric materials are integrated in the lipstick shell screwing machine in an innovation mode, so that the shell screwing speed is high, the operation is convenient, and a plurality of shell screwing mechanisms can be arranged at the same working position.