Shoe energy collecting device

A shoe energy collecting device, comprising a shell, a piezoelectric assembly, an elastic component, a magnet array, a base, a supporting block, an upper friction assembly and a lower friction assembly, wherein the shell comprises a supporting shell and a plastic shell which are connected in sequence and communicated with each other, the supporting block is provided in the supporting shell, the supporting block is inverted L-shaped, the base is provided below the supporting block, the lower friction assembly is provided between the supporting block and the base, the lower friction assembly is slidable relative to the base, the upper friction assembly is provided on an inner wall of a top surface of the plastic shell, the upper friction assembly and the lower friction assembly are capable of being electrified by friction, the lower friction assembly extends into the plastic shell, a coil is provided on a lower surface of the lower friction assembly at a side of the plastic shell, the magnet array is provided below the coil, the piezoelectric assembly is provided in the plastic shell, the elastic component is provided on a side wall of the plastic shell away from the supporting block, the elastic component is connected with the piezoelectric assembly, and the lower friction assembly is capable of being in contact with the piezoelectric assembly.