A misting fan (100, 200), comprising: a nozzle (14, 20, 300, 400) configured to spray water; a fan assembly (13, 201) comprising fan blades and an electric motor configured to drive the fan blades to rotate; a support assembly (10a, 202) configured to support the fan assembly; wherein the support assembly is formed with a coupling portion for detachably coupling a battery pack (101, 102, 103, 203), the nozzle is disposed on the fan assembly or the support assembly, and the battery pack (101, 102, 103, 203) detachably installed to the coupling portion; a waterway system comprising a water pipe connected to the nozzle; a pump connected to the water pipe; wherein the nozzle comprises: a nozzle body (21, 31, 41) comprising a first part (212, 312, 411) formed with a first surface (212a, 312a, 411a); and a second part (221, 321, 412) detachably installed to the nozzle body and formed with a second surface (221a, 321a, 412a); wherein a water flow channel (223, 323, 43) is formed between the second surface and the first surface when the second part is installed to the nozzle body, and the first surface is at least partially exposed to be cleaned when the second part is detached from the nozzle body; wherein the second part is formed with a water outlet hole through which the water is sprayed to an outside, characterized in that a diameter of the water outlet hole is greater than or equal to 0.2 mm and less than or equal to 0.4 mm; wherein output water pressure of the pump is greater than or equal to 0.276 MPa (40 psi) and less than or equal to 0.827 MPa (120 psi); wherein the nozzle body further comprises a support piece configured to support the first part, and the support piece is formed with a water inlet hole and an accommodation cavity in which the first part is disposed; wherein the first part is movably disposed in the accommodation cavity; wherein the nozzle body further comprises an elastic piece disposed in the accommodation cavity and a spring (213, 413) supported between the elastic piece and the first part, the accommodation cavity is formed with a hole communicating with the water inlet hole on a bottom surface of the accommodation cavity, and the elastic piece is supported at the hole. a nozzle (14, 20, 300, 400) configured to spray water; a fan assembly (13, 201) comprising fan blades and an electric motor configured to drive the fan blades to rotate; a support assembly (10a, 202) configured to support the fan assembly; wherein the support assembly is formed with a coupling portion for detachably coupling a battery pack (101, 102, 103, 203), the nozzle is disposed on the fan assembly or the support assembly, and the battery pack (101, 102, 103, 203) detachably installed to the coupling portion; a waterway system comprising a water pipe connected to the nozzle; a pump connected to the water pipe; wherein the nozzle comprises: a nozzle body (21, 31, 41) comprising a first part (212, 312, 411) formed with a first surface (212a, 312a, 411a); and a second part (221, 321, 412) detachably installed to the nozzle body and formed with a second surface (221a, 321a, 412a); a nozzle body (21, 31, 41) comprising a first part (212, 312, 411) formed with a first surface (212a, 312a, 411a); and a second part (221, 321, 412) detachably installed to the nozzle body and formed with a second surface (221a, 321a, 412a); wherein a water flow channel (223, 323, 43) is formed between the second surface and the first surface when the second part is installed to the nozzle body, and the first surface is at least partially exposed to be cleaned when the second part is detached from the nozzle body; wherein the second part is formed with a water outlet hole through which the water is sprayed to an outside, characterized in that a diameter of the water outlet hole is greater than or equal to 0.2 mm and less than or equal to 0.4 mm; wherein output water pressure of the pump is greater than or equal to 0.276 MPa (40 psi) and less than or equal to 0.827 MPa (120 psi); wherein the nozzle body further comprises a support piece configured to support the first part, and the support piece is formed with a water inlet hole and an accommodation cavity in which the first part is disposed; wherein the first part is movably disposed in the accommodation cavity; wherein the nozzle body further comprises an elastic piece disposed in the accommodation cavity and a spring (213, 413) supported between the elastic piece and the first part, the accommodation cavity is formed with a hole communicating with the water inlet hole on a bottom surface of the accommodation cavity, and the elastic piece is supported at the hole.