The purpose of the present invention is to provide a method for producing a solid material from a saccharide liquid comprising isomaltulose. The present invention provides a method for producing a solid material from a saccharide liquid comprising isomaltulose, wherein said saccharide liquid is obtained by allowing an enzyme which produces isomaltulose from sucrose to act on a sucrose liquid, wherein said method comprises steps: heating said saccharide liquid to adjust a solid content of said saccharide liquid to 77 to 96 mass%, subjecting a product resulting from the aforesaid step to a process for applying a shearing force on the product, while keeping a temperature of the product at 65 to 120 degrees Celsius, to generate crystal nuclei, and cooling a product resulting from said process to obtain the solid material.