Assembly type protective fence for building engineering construction

The utility model discloses an assembly type building engineering construction protective fence which comprises a supporting frame, a first threaded groove is formed in the surface of the supporting frame, a rotating column is arranged in the supporting frame, a first clamping groove is formed in an inner cavity of the rotating column, the top end of the rotating column is connected with a limiting block, and a second clamping groove is formed in the top end of the limiting block. Guardrails are arranged on the two sides of the supporting frame, a fixing block is welded to the top end of each guardrail, and a first bolt is slidably connected into each fixing block. According to the assembled protective fence for building engineering construction, under the mutual cooperative use of the supporting frame, the protective fence, the fixing block and the first bolt, one side of the protective fence is manually aligned with a first clamping groove in the supporting frame to be clamped, then the first bolt is manual