Telescopic adjustable edge protection device convenient to disassemble and assemble

The telescopic adjustable edge protection device convenient to disassemble and assemble comprises a first connecting rod, a second connecting rod and a connecting mechanism, and the interior of the first connecting rod is hollow; the second connecting rod can be inserted into the first connecting rod; the connecting mechanism comprises a first plug pin assembly and a first fixing rod. The first plug pin assembly comprises a base, a guide piece, a blocking piece, a pin rod and a pin. The base is horizontally arranged on the left side of the top face of the first connecting rod. The guide pieces are arranged on the left and right sides of the top surface of the base; the top of the blocking piece is provided with an opening; the pin rod horizontally penetrates through the guide piece and the blocking piece and leftwards extends out of the left end of the first connecting rod; the pin is vertically arranged on the pin rod and located between the two guiding pieces. And the right end of the first fixing rod right