The invention discloses a portable coiling and uncoiling device. The portable coiling and uncoiling device comprises a gear set and a clamping piece, wherein the gear set is fixed on a wire reel; the clamping piece is rotatably fixed on a supporting seat and comprises a clamping tooth end and a fixing end; the clamping tooth end comprises a first clamping tooth and a second clamping tooth; the fixing end and the clamping tooth end of the clamping piece are opposite; and the fixing end relatively fixes the clamping tooth end and the supporting seat through a positioning piece. By the portable coiling and uncoiling device, electrical accidents or personal safety accidents which are quite easily caused by the reason of grounding wires due to gravity of the grounding wires in air in the prior art are solved effectively.