Disclosed is a manufacturing method of a direct fired container. The manufacturing method of a direct fired container comprises the following steps: molding a container main body using a die cast; forming a first groove part on one side between both sides of the bottom of the container main body along with the container main body molding operation; and forming a second groove part on the other side of the bottom of the container main body by connecting the second groove part to the end of the first groove part. [Reference numerals] (S1) Process of molding a container main body;(S2) Process of forming a first groove part;(S3) Process of forming a second groove part
