Stretchable protective fence facilitating temporary passing

The utility model relates to a protective fence, in particular to a stretchable protective fence convenient for temporary passage. Comprising a guardrail stand column, the guardrail stand column is composed of a fixed column, a clamping column and supporting tables, a clamping groove is formed in the surface, close to the fixed column, of the clamping column, the supporting tables are fixedly connected to the bottoms of the fixed column and the clamping column, a guardrail assembly is arranged between the fixed column and the clamping column, and one side of the guardrail assembly is fixedly connected with the outer wall of the fixed column; and the other side of the rotating shaft is clamped in the clamping groove through a starting assembly. The fixed column and the clamping column can be supported through the supporting table, in the construction process of building engineering, the guardrail assembly fixedly connected with the fixed column is stretched, the other end of the guardrail assembly can be conne