Manual switch device suitable for vacuum environment

The invention provides a manual switch device suitable for a vacuum environment. The manual switch device comprises a shielding assembly, a first connecting piece, a supporting guide rod, a pushing handle, a compression moving assembly, a sliding push rod assembly, a limiting assembly and a first push rod fixing piece. The manual switch device suitable for the vacuum environment is used for opening or closing the vacuum cabin; the pushing handle can drive the sliding push rod assembly to drive the shielding assembly to rotate around the axis where the first connecting piece is located through the first push rod fixing piece so as to open or close the vacuum cabin. The vacuum chamber is simple in structure and low in maintenance cost, and the effect of opening or closing the vacuum chamber can be achieved without using electric appliance parts. Moreover, the device is reasonable in structure, is suitable for vacuum cabins with different structures, and has universality. By means of the compression guide assemb