Commodity information display device applied to electronic commerce system

The invention relates to the technical field of commodity display, in particular to a commodity information display device applied to an electronic commerce system. An inner gear ring plate is fixedlyconnected to the interior of a supporting table, a first gear is engaged with the interior of the inner gear ring plate, and a support is fixedly connected to the outer surface of the first gear; anarc-shaped clamping groove is formed in the inner wall of the first gear, an arc-shaped toothed plate is meshed with the interior of the arc-shaped clamping groove, a fixing shaft is movably connectedto the bottom end of the display cabinet and penetrates through the interior of the support, a warning mechanism is fixedly connected to the bottom of the fixing shaft and penetrates through the lower portion of the inner toothed ring plate, and the second gear drives a rotating wheel to rotate through a belt; a metal separation blade on the rotating wheel knocks the metal separation blade to give out warning sound, the ef