PROBLEM TO BE SOLVED: To provide a recycling method for valuable metals which achieves efficient extraction, recovery and regeneration of In (indium) and Ag (silver) as electrode materials from waste products of flat panel displays such as a liquid crystal display panel or plasma display, can be utilized as an economically and environmentally effective means and has a large propagation effect on display production aiming at cost reduction. SOLUTION: The recycling method for valuable metals includes: immersing the waste flat panel display into an HNO 3 solution; filtering the solution to separate the solution containing In and Ag from a residue; adding KCl or NaCl to the In/Ag-containing solution to obtain an In-containing solution and AgCl precipitate; concentrating the In-containing solution to prepare the solution having a prescribed In concentration; spraying the prepared In-containing solution onto a substrate to form an In-containing transparent film on the substrate; and burning the AgCl precipitate to recover Ag. COPYRIGHT: (C)2009,JPO&INPIT