Burner and cooking appliance having burner

A cooking appliance, comprising:

• a frame in which a cooking chamber is provided;
• a circulation device arranged in the frame and having a circulation chamber that communicates with the cooking chamber;
• and
• a heating device arranged outside of the frame and configured to supply heated air to the circulation chamber, wherein the heating device comprises:
• a burner case arranged at a lower portion of the circulation device and having a combustion chamber therein, the combustion chamber being connected to the circulation chamber;
• and
• a burner arranged in the combustion chamber and having a flame hole portion that spouts gas, wherein the flame hole portion comprises:
• a first flame hole array in which multiple flame holes are arranged in a first direction;
• and
• a second flame hole array in which multiple flame holes are arranged in the first direction, which is spaced apart from the first flame hole array in a circumferential direction of the burner, wherein the first flame hole array comprises a pair of first array main flame holes spaced apart from each other, the pair of first array main flame holes being arranged repeatedly, and wherein an auxiliary flame hole is arranged between each of the pair of first array main flame holes and has a diameter smaller than a diameter of each of the pair of first array main flame holes.