Micro-bubble generator

A micro-bubble generator provided between an input end and an output end of a water outlet device, said micro-bubble generator comprising:

• a water inlet member, including a first main body adjacent to said input end, and a first channel penetrating said first main body, said first main body being provided at one end penetrated by said first channel with a first junction surface;
• and
• a water outlet member, including a second main body adjacent to said output end, and a second channel penetrating said second main body, said second main body being provided at one end penetrated by said second channel with a second junction surface, and said second main body is provided with a sleeve at other end opposite to said second channel, wherein said sleeve is arranged annularly toward said output end;
• wherein said water inlet member and said water outlet member are abutted against each other, with said first junction surface facing said second junction surface, said first channel being communicated with said second channel, and at least one of said first junction surface and said second junction surface are provided with a plurality of chiseled shallow recesses which respectively forms a gas inlet gap after said first junction surface being engaged with said second junction surface, said gas inlet gap communicating external air to said first channel and said second channel.