Method of manufacturing resin multilayer substrate

A method of manufacturing a resin multilayer substrate in which a component is incorporated in a stacked body obtained by stacking a plurality of thermoplastic resin sheets, said method comprising the steps of:

• fixing said component to a first resin sheet of said plurality of resin sheets by pressing said component against said first resin sheet in a state where said first resin sheet is softened by heating, said first resin sheet being located adjacent to a first side in a thickness direction of said component;
• stacking said first resin sheet having said component fixed thereto on a second resin sheet of said plurality of resin sheets that has a through hole receiving said component and a third resin sheet of said plurality of resin sheets that is located adjacent to a second side of said component opposite to said first side, such that said component is inserted into said through hole and a surface of said component on said second side faces said third resin sheet;
• and
• performing compression bonding by heating and pressurizing said stacked body including said first resin sheet, said second resin sheet and said third resin sheet.