The present invention provides a lifting device and a semiconductor processing apparatus. The lifting device comprises a lifting shaft, a corrugated pipe assembly and a linear bearing; the lifting shaft can rise and descend and is used for driving a lifted member to rise and descend; the corrugated assembly is used for guaranteeing the sealing performance of a reaction chamber; the linear bearing cooperates with the lifting shaft so as to individually constrain the degree of freedom of the lifting shaft in the radial direction of the lifting shaft; and the linear bearing and the corrugated pipe assembly are nested to each other to form an integrated structure. According to the lifting device provided by the present invention, assembling precision can be ensured, equipment structure and an installation process can be simplified, an installation space can be saved, and therefore, process uniformity can be improved, and processing costs can be reduced.