A method for forming a sandwich panel with a core structure and cover layers (4, 6) arranged on each side, wherein the core structure comprises a multitude of, in particular honeycomb-shaped, cells, and with at least one insert for forming a local reinforcement, in particular for forming a force transmission point, wherein the at least one insert is arranged between the cover layers, wherein prior to covering a core structure on both sides with cover layers (4, 6), at least one insert is inserted; wherein the insert together with the core structure and the cover layers is pressed to form the sandwich panel; and wherein: i) the at least one insert has a lesser expansion (e) than a command cover layer distance (a) and is inserted, together with at least one viscous expansion compound (20, 26) with adhesive characteristics, into a section of the core structure, wherein the at least one cured expansion compound compensates a difference (d) between its extension (e) and the cover layer distance (a) (20, 26); wherein the insert comprises two sections, wherein one section is already cured at the time of installation of the sandwich panel, and wherein the other section is provided as the expansion compound that is viscous during installation of the sandwich panel; and wherein the expansion compound (20, 26) expands and cures during curing; or wherein: ii) the at least one insert in its original elastic state, in which it is larger than the command cover layer distance (a), is inserted into a cutout in the core structure, wherein the at least one insert is deformed or upset during pressing of the core structure with the cover layers and is thus being set to the cover layer distance; and wherein, during pressing, said insert cures in its deformed state. wherein prior to covering a core structure on both sides with cover layers (4, 6), at least one insert is inserted; wherein the insert together with the core structure and the cover layers is pressed to form the sandwich panel; and wherein: i) the at least one insert has a lesser expansion (e) than a command cover layer distance (a) and is inserted, together with at least one viscous expansion compound (20, 26) with adhesive characteristics, into a section of the core structure, wherein the at least one cured expansion compound compensates a difference (d) between its extension (e) and the cover layer distance (a) (20, 26); wherein the insert comprises two sections, wherein one section is already cured at the time of installation of the sandwich panel, and wherein the other section is provided as the expansion compound that is viscous during installation of the sandwich panel; and wherein the expansion compound (20, 26) expands and cures during curing; or wherein: ii) the at least one insert in its original elastic state, in which it is larger than the command cover layer distance (a), is inserted into a cutout in the core structure, wherein the at least one insert is deformed or upset during pressing of the core structure with the cover layers and is thus being set to the cover layer distance; and wherein, during pressing, said insert cures in its deformed state. i) the at least one insert has a lesser expansion (e) than a command cover layer distance (a) and is inserted, together with at least one viscous expansion compound (20, 26) with adhesive characteristics, into a section of the core structure, wherein the at least one cured expansion compound compensates a difference (d) between its extension (e) and the cover layer distance (a) (20, 26); wherein the insert comprises two sections, wherein one section is already cured at the time of installation of the sandwich panel, and wherein the other section is provided as the expansion compound that is viscous during installation of the sandwich panel; and wherein the expansion compound (20, 26) expands and cures during curing;