A toilet comprising a bidet that comprises - a cleaning water generating apparatus; - a nozzle assembly that dispenses water to the private parts of the user; and - a cleaning water dispensing apparatus for receiving cleaning water from the cleaning water generating apparatus, and for dispensing the cleaning water to an inner wall of the toilet to clean the inner wall of the toilet, the cleaning water dispensing apparatus comprising: - an inlet through which cleaning water is introduced, the inlet being formed at an upper portion of a body part; - a hollow part through which cleaning water can flow, the hollow part extending in a lengthwise direction from the upper portion to a lower portion of the body part; - an outlet in fluid connection with the hollow part at the lower portion and extending in a radial direction so as to discharge cleaning water in the radial direction; characterized in that the cleaning water dispensing apparatus further comprises: - a nozzle part having a cylindrical shape and coupled to a lowermost portion of the body part, the outlet being arranged to discharge towards an inner cylindrical wall of the nozzle part; - a protruding part being formed at a lower side of the outlet within the nozzle part, the protruding part having a cylindrical shape with a diameter smaller than an internal diameter of the nozzle part; - a cylindrical vortex production chamber formed by a recessed bottom surface of the protruding part together with an inner side of a bottom of the nozzle part; - a guide groove extending from a side wall of the vortex production chamber to an interior of the vortex production chamber toward a position deviating from a center of the vortex production chamber to provide a rotational force to the cleaning water introduced from the outlet in between the nozzle part and the protruding part and into and along the guide groove into the vortex production chamber to produce a vortex rotating about the center of the vortex production chamber, wherein the guide groove is formed such that its width narrows from the side wall toward the interior to have the cleaning water flowing along the guide grooves at a high pressure and a high speed to form a strong vortex; and - a dispensing hole disposed at the center of the bottom of the vortex production chamber for dispensing vortex-produced cleaning water of the vortex production chamber to an inner wall of the toilet, the cleaning water in the vortex production chamber being sprayed in the form of fine particles through the dispensing hole, in that the cleaning water is sterilizing water so that the cleaning water generating apparatus forms a sterilizing water generating apparatus and the cleaning water dispensing apparatus forms a sterilizing water dispensing apparatus, and in that the bidet further comprises a nozzle tip cleaning part that cleans a nozzle tip of the nozzle assembly, wherein the sterilizing water generating apparatus is connected to the sterilizing water dispensing apparatus and the nozzle tip cleaning part, and sterilizing water generated by the sterilizing water generating apparatus is supplied to the sterilizing water dispensing apparatus for to the nozzle tip cleaning part. - a cleaning water generating apparatus; - a nozzle assembly that dispenses water to the private parts of the user; and - a cleaning water dispensing apparatus for receiving cleaning water from the cleaning water generating apparatus, and for dispensing the cleaning water to an inner wall of the toilet to clean the inner wall of the toilet, the cleaning water dispensing apparatus comprising: - an inlet through which cleaning water is introduced, the inlet being formed at an upper portion of a body part; - a hollow part through which cleaning water can flow, the hollow part extending in a lengthwise direction from the upper portion to a lower portion of the body part; - an outlet in fluid connection with the hollow part at the lower portion and extending in a radial direction so as to discharge cleaning water in the radial direction; - a nozzle part having a cylindrical shape and coupled to a lowermost portion of the body part, the outlet being arranged to discharge towards an inner cylindrical wall of the nozzle part; - a protruding part being formed at a lower side of the outlet within the nozzle part, the protruding part having a cylindrical shape with a diameter smaller than an internal diameter of the nozzle part; - a cylindrical vortex production chamber formed by a recessed bottom surface of the protruding part together with an inner side of a bottom of the nozzle part; - a guide groove extending from a side wall of the vortex production chamber to an interior of the vortex production chamber toward a position deviating from a center of the vortex production chamber to provide a rotational force to the cleaning water introduced from the outlet in between the nozzle part and the protruding part and into and along the guide groove into the vortex production chamber to produce a vortex rotating about the center of the vortex production chamber, wherein the guide groove is formed such that its width narrows from the side wall toward the interior to have the cleaning water flowing along the guide grooves at a high pressure and a high speed to form a strong vortex; and - a dispensing hole disposed at the center of the bottom of the vortex production chamber for dispensing vortex-produced cleaning water of the vortex production chamber to an inner wall of the toilet, the cleaning water in the vortex production chamber being sprayed in the form of fine particles through the dispensing hole,