A micro-bubble spray head , wherein the micro-bubble spray head comprises a one-piece spray pipe and a micro-bubble filter screen bag fixed inside an outlet end of the one-piece spray pipe ; a Venturi tube structure is formed in the one-piece spray pipe , and a suction port is provided on the one-piece spray pipe , so that air is sucked into the one-piece spray pipe through the suction port by means of a negative pressure produced by the Venturi tube structure and mixes with a water flow in the one-piece spray pipe to produce bubble water; and the micro-bubble filter screen bag comprises an opening , a bottom and a side wall between the opening and the bottom ; the opening faces the Venturi tube structure, and a water outflow space is formed between the side wall and an inner wall of the outlet end so that the bubble water can pass through the side wall and the bottom to form micro-bubble water; wherein the Venturi tube structure is composed of a diameter-decreased conical passage part , an at-least-one-stage diameter-decreased conical passage is formed in the diameter-decreased conical passage part in a water flow direction, and a spray hole is arranged at a downstream end of the diameter-decreased conical passage part , so that the water flow pressurized by the at-least-one-stage diameter-decreased conical passage can be sprayed from the spray hole and generate a negative pressure in the one-piece spray pipe , and wherein when the spray hole is positioned close to an inlet end of the one-piece spray pipe , the suction port is positioned close to the spray hole and/or positioned at the outlet end ; characterized in that a first suction port and a second suction port are provided on the one-piece spray pipe , the first suction port is positioned close to the spray hole , and the second suction port is positioned at the outlet end . a Venturi tube structure is formed in the one-piece spray pipe , and a suction port is provided on the one-piece spray pipe , so that air is sucked into the one-piece spray pipe through the suction port by means of a negative pressure produced by the Venturi tube structure and mixes with a water flow in the one-piece spray pipe to produce bubble water; and the micro-bubble filter screen bag comprises an opening , a bottom and a side wall between the opening and the bottom ; the opening faces the Venturi tube structure, and a water outflow space is formed between the side wall and an inner wall of the outlet end so that the bubble water can pass through the side wall and the bottom to form micro-bubble water; wherein the Venturi tube structure is composed of a diameter-decreased conical passage part , an at-least-one-stage diameter-decreased conical passage is formed in the diameter-decreased conical passage part in a water flow direction, and a spray hole is arranged at a downstream end of the diameter-decreased conical passage part , so that the water flow pressurized by the at-least-one-stage diameter-decreased conical passage can be sprayed from the spray hole and generate a negative pressure in the one-piece spray pipe , and wherein when the spray hole is positioned close to an inlet end of the one-piece spray pipe , the suction port is positioned close to the spray hole and/or positioned at the outlet end ; characterized in that a first suction port and a second suction port are provided on the one-piece spray pipe , the first suction port is positioned close to the spray hole , and the second suction port is positioned at the outlet end . <EOS>