The invention discloses a lifting device. The lifting device comprises a lifting frame and lifting chains, wherein one ends of the lifting chains are provided with lifting hooks, and the other ends of the lifting chains are connected with the lifting frame through a positioning regulating mechanism; the lifting device is characterized in that the lifting chains and the lifting frame are connected through the positioning regulating mechanism, a connecting position of the lifting chains and the lifting frame is regulated according to the actual requirement through the positioning regulating mechanism, a rotating semidiameter and a rotating center of each lifting chain are regulated according to the actual requirement, and a lifting requirement of a product with the large size is met; the lifting device is capable of meeting lifting requirements of multiple size products, the structure is simple, the manufacture is easy, the regulation is convenient, and the production operation efficiency is effectively improved.