Dual-phase-flow mist spray head

The utility model relates to a dual-phase-flow mist spray head. The mist spray head comprises a casing pipe and a nozzle, wherein a water nozzle is arranged in the middle of the upper end of the nozzle and is in a stepped ring shape, a large ring opening at the upper part is communicated with a water inlet channel, an atomizing core is arranged at the upper part in the water nozzle, a small ring opening at the lower part of the nozzle is a blind pipe, and a small water spray hole is formed in the middle; a water-air flange connected with the nozzle and the casing pipe is arranged on the periphery of the upper end of the nozzle, a collecting ring is arranged below the inner side of the water-air flange, and the lower side of the collecting ring is flush with the lower end of the water nozzle; the upper end of the collecting ring is communicated with an air inlet channel through the water-air flange; an atomizing chamber is arranged on lower sides of the collecting ring and the water nozzle, and mist spray nozzles are arranged on walls around the atomizing chamber. According to the technical scheme, water fully atomized by the atomizing core in the water inlet channel and air collected by the collecting ring and fully atomized in the atomizing chamber are diffused to the periphery of the nozzle via the narrow-gap spray nozzles around side surfaces, so that the peripheral space is filled.