The invention relates to the field of copper strip processing, in particular to a copper strip processing device. The copper strip processing device comprises a box body, a grinding mechanism, a feeding plate, a driving mechanism, a fixing mechanism, a cooling mechanism, an aligning mechanism, a pressing mechanism and an alarming mechanism; when a copper strip is pressed and thinned by the pressing mechanism, the surface area of the copper strip is increased, the copper strip is moved to the top surface of a mounting mechanism, redundant materials at the edge of the side wall of the copper strip protrude from the top surface of the mounting mechanism, the grinding mechanism rotates in the box body, and the grinding mechanism rotates to cut redundant materials at the edge of the copper strip, so that the copper strip reaches the processing standard, in addition, the grinding mechanism rotates again to make contact with the cut copper strip, the cut copper strip edge is ground, burrs ofthe copper strip are removed, and people can use the device conveniently; and when the pressing mechanism rotates, the cooling mechanism and the alarming mechanism are driven to move up and down, so that air moves rapidly in the box body, the copper strip is cooled, the strength of the copper strip is increased, the alarming mechanism is moved up and down, thus, the alarming mechanism presses thecopper strip in the pressing mechanism downwards, and the copper strip is prevented from being bent.