The invention discloses an improved plastic copper belt for a photovoltaic cell and relates to the technical field of plastic copper belts. The improved plastic copper belt for the photovoltaic cell comprises a rolling wheel; the surface of the rolling wheel is wound with a plastic copper belt body; the surface of the plastic copper belt is fixedly connected with one side of a rubber cushion; wearresistance cushions are fixedly connected to the positions, on the left side and the right side of a rubber cushion and on the surface of the plastic copper belt body respectively; fixed plates are in lap joint to the left side and the right side of the rolling wheel respectively; one side of the rolling wheel is provided with rotary shafts in an interpenetration manner; and the left end and theright end of the rotary shafts are movably connected with one sides of the two fixed plates respectively. For the improved plastic copper belt for the photovoltaic cell, by arranging chutes, fixed grooves, supporting columns, sleeve rings, springs, connection rods and limiting blocks, when the plastic copper belt body is used, the four limiting blocks are pulled outward to drive the correspondingconnection rods to move, the connection rods drive the corresponding sleeve rings to extrude the corresponding springs, and then the plastic copper belt body is taken for use after the rotary rollingwheel on one side of the plastic copper belt body is withdrawn.