Provided are a burner system and a heating and cooking appliance having the same. The burner system includes a burner pot, and a mixing tube unit. The burner pot provides a space where a gas and air mix and burn, and the mixing tube unit is integrally formed with the burner pot to guide the gas and the air to the burner pot. The burner pot and the mixing tube unit include a plurality of members coupled vertically and forming an appearance.