Provided is a burner including a burner head to receive a mixed gas; and a burner cap to cover the burner head, wherein the burner head includes an outer wall having a plurality of first flame holes at which a flame is generated, an inner wall located at an inside of the outer wall and having a plurality of second flame holes at which a flame is generated, and a mixed gas chamber defined between the outer wall and the inner wall, and the burner cap includes a distribution guide to guide a flow of the mixed gas so that the mixed gas introduced into the mixed gas chamber is evenly distributed in the mixed gas chamber.