To provide gas-burning equipment aiming at stabilization and shortening of flames.

The gas-burning equipment comprises a primary combustion chamber 12 having a single opening 13 in the upper part of a burner 11 placed inside, a secondary combustion chamber 15 having a single opening 16 in the upper part of the primary combustion chamber 12 placed inside, and a main combustion chamber 18 having an opening 19 in the upper part of the secondary combustion chamber 15 placed inside. A plurality of air inlets 14 for the primary combustion chamber are provided below the combustion chamber 12. Thus, a combustion reaction is accelerated, and stabilization and shortening of flames can be attained.