Portable safety fence for house building construction

The utility model discloses a portable safety fence for house building construction, which comprises two groups of supporting columns, and a plurality of groups of connecting rods are fixedly connected between the two groups of supporting columns; the connecting shaft is arranged on the supporting column and rotationally connected with the supporting column, the connecting shaft is fixedly connected with a gear rotationally connected with the supporting column, and the gear is connected with a replacement structure connected with the supporting column; the problem that time and labor are wasted when a constructor lifts the fence to a working place originally is solved, the fence is convenient to carry and fix by arranging the replacement structure, transportation is more labor-saving, practicability is effectively improved, and the fence can be conveniently replaced when being carried and fixed. And by arranging the connecting structures, the multiple sets of fences can be conveniently transported at the same