The present invention relates to a head assembly of a portable gas burner, comprising: a head body having an air supply unit provided at the center, a gas supply unit provided outside the air supply unit so as to communicate with the venturi tube, and an inner wall partitioning the gas supply unit and the air supply unit; Opposing the main flange in contact with the rim of the head body to form a radial main flame, a separation flange in contact with the inner wall to partition the air supply and gas supply, an inclined flange with a plurality of intermediate nozzles, and a separation flange A connection member having a center flange formed integrally with the inclined flange; And a through hole communicating with the air supply unit is formed at the center, and a plurality of first and second ignition holes are provided radially around the through hole, and the ignition installed in the connecting member to seal between the center flange and the inclined flange. A member is provided.
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