The invention discloses an integrated sealed hand wheel and a manufacturing method thereof. The integrated sealed hand wheel comprises a positioning ring, a counterweight and a body, wherein the positioning ring is formed in an injection molding mode the first time. The counterweight is installed on the positioning ring, then the positioning ring is put into a mold, and injection molding is carried out the second time, so that the counterweight and he positioning ring are fused and connected into the body as a whole. In this way, the counterweight is wrapped in a sealed containing cavity formed after fused connection of the positioning ring and the body, thereby being isolated from the external steam and air. According to the integrated sealed hand wheel and the manufacturing method thereof, the counterweight is effectively prevented from being rusted, integrated forming is adopted, a subsequent adaptation process is omitted, the production efficiency is improved, the strength is improved, and the service life of the integrated sealed hand wheel is longer.