Abstract: The present invention provides a lead-auto-sharpened propelling pencil and a process of making it. The propelling pencil comprises a pencil body and a pencil cap. The pencil cap consists of a sharpener, a screwing insert and a powder remover. The process of sharpening the lead is automatically provided while the pencil cap is twisted onto the pencil body. The lead powder from sharpening is gathered in the powder remover so that the environment can be protected. The manufacturing process of the invention is that the cap case is moulded by the means of a cap case jig with the screwing insert and the sharpener installed by the means of a tapered jig. The manufacturing process according to the invention has broad application and is very practical.