A canister includes an activated carbon molding configured to adsorb an evaporated fuel originating in a fuel tank of a vehicle; and an adsorption chamber accommodating the activated carbon molding. A method of manufacturing the canister includes pressing fibrous activated carbons in a specific direction, or performing suction to thereby gather the fibrous activated carbons in the specific direction and mold the fibrous activated carbons into the activated carbon molding that has a columnar shape; and arranging, inside the adsorption chamber, the activated carbon molding produced such that a pressing direction or a suction direction for the activated carbon molding is perpendicular to a flow direction of the evaporated fuel.