The invention discloses a fan water spray cutting component and a fan. The fan water spray cutting component comprises a circulation pipe, a piston and a drive part, wherein two ends of the circulation pipe are respectively a master water spray inlet and a top water spray outlet, the circulation pipe is provided with a first guide hole and a second guide hole penetrating the outer wall of the circulation pipe, and the first guide hole and the second guide hole are opposite; a water spray inlet cavity is defined in the piston, two ends of the water spray inlet cavity are respectively a lateral water spray inlet and a lateral water spray outlet, the piston is slidably disposed on the first guide hole and the second guide hole when located between a first position and a second position, the piston prevents the master water spray inlet from being communicated with the top water spray outlet when located at the first position, the master water spray inlet is communicated with the lateral water spray inlet and the lateral water spray inlet extends to a blade area, and the master water spray inlet is disconnected with the lateral water spray inlet when the piston is located at the second position; the drive part is connected with the piston to drive the same to slide. The fan water spray cutting component can prevent water spray condensation and cut the water spray fast.