The mast lifting frame is a key device for elevating the mast. To address the issue of difficult mast erection in complex terrains, a lightweight automatic lifting frame for mast erection has been developed. This frame can be raised and lowered using multistage hydraulic cylinders, and the mast can be elevated by 3 m through the coordinated work of the hydraulic cylinder, chains, and pulleys. The lightweight automatic lifting frame for mast erection described in this chapter is suitable for a suspended mast with a cross-section of 700 mm and an overall height of 33 m. It features advantages such as being lightweight, highly efficient, safe, and capable of installation in complex terrains. This provides a new method for mast erection. The chapter introduces the structure of the lightweight automatic lifting frame for mast erection, explains its working principle, and uses finite element analysis software to simulate the critical stressed components.