In the present invention, step 1 of forming a conductive metal layer (M1) containing silver particles on the insulating molded body (A), by removing a part of the conductive metal layer (M1), the conductive metal layer (M1), pattern formation Step 2 of separating the conductive metal layer PM1 in the region and the conductive metal layer NPM1 in the non-pattern formation region 2, on the conductive metal layer PM1 in the pattern formation region, a pattern metal layer PM2 is formed by electrolytic plating. A method of manufacturing a molded article having a metal pattern on an insulating molded article, comprising: forming step 3 and step 4 of removing the conductive metal layer NPM1 in the non-pattern formation region with an etching solution. In this manufacturing method, a metal pattern having high adhesion can be formed without coordinating the surface of the molded body, and a molded body having a metal pattern on the surface can be produced without requiring a vacuum device or a special device. .
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