5G front-pass semi-active optical transmission protection system

The utility model discloses a 5G front-pass semi-active optical transmission protection system, which comprises a plurality of supporting assemblies, a supporting table, two clamping assemblies and a semi-active wavelength division equipment main body, the supporting assembly comprises a stand column, a sliding block and an adjusting bolt. The sliding block is slidably connected with the stand column. The adjusting bolt is in threaded connection with the stand column and the sliding block. The supporting table is fixedly connected to the side edges of the multiple sliding blocks. The semi-active wavelength division equipment main body can be fixed above the supporting table through the two clamping assemblies; the adjusting bolt is screwed out of the second threaded hole of the sliding block and the first threaded hole of the stand column, so that the sliding block is not fixed any more, the horizontal height of the semi-active wavelength division equipment body can be changed by sliding the sliding block to