The invention discloses an electronic product plastic shell melting impurity filtering device. The electronic product plastic shell melting impurity filtering device comprises a melting tank, a smashing tank and an extrusion tank, wherein the outer wall of the top of the melting tank and the smashing tank are welded; two smashing rollers are arranged on the inner walls of the two opposites of thesmashing tank; a driving motor is welded on two smashing roller driving shafts and is fixed to the outer wall of one side of the smashing tank by a bolt; a mounting hole is formed in the outer wall ofthe top of the smashing tank; a feeding hopper is welded on the inner wall of the mounting hole; guide plates are welded on the inner walls of the two opposite sides of the smashing tank; a first heating plate is welded on the inner wall of the smelting tank; and feeding holes of the same specification are formed in the first heating plate and the outer wall of the top of the smelting tank. The electronic product plastic shell melting impurity filtering device is compact in structure, is practical and novel, can smash a plastic shell, accelerates the melting speed of the shell, can also separate entrained metal elements from melting raw materials, then squeezes out colloidal particle raw materials and is economical and environmentally-friendly.