Disclosed herein is a multi-functional bidet having an extra function such as an enema function for a constipated person, in addition to its normal function of cleansing pubic area and anal region. Specifically, the bidet of the invention is constructed such in a manner that an anus-cleansing function, a bidet cleansing function, and an enema function are embodied in a single nozzle; or any one function is constituted on a spray tip projected from the separate spray nozzle body; or one or two functions among the anus-cleansing function, the bidet cleansing function and the enema function are embodied in two or three spray nozzles, which are projectably inserted in the lower central portion of the bidet body so as to be arranged horizontally adjacent to one anther; or one or two functions among the anus-cleansing function, the bidet cleansing function and the enema function are embodied in two or three spray nozzles, which are projectably inserted in the lower central portion of the bidet body so as to be arranged vertically adjacent to one anther.