The invention discloses a wireless monitoring system and a monitoring method for urine, and relates to the field of biomedical analysis and sensing monitoring equipment. The technical scheme is that the wireless monitoring system comprises a diaper and a remote monitoring end, wherein the diaper comprises an inner layer, a water absorbing layer, a core body layer, an absorbing layer and a surface layer which are sequentially arranged; the inner layer is a pervious layer; the surface layer is an impervious layer; the core body layer is prepared from polymer water-absorbent resin; an electrode probe is arranged between the water absorbing layer and the inner layer, and is electrically connected with a central module; the central module is arranged in the core body layer. The wireless monitoring system disclosed by the invention has the beneficial effects that a quantitative measurement technology of an electrochemical electrode probe is combined with a remote output technology of a radio signal; a produced electrode probe is made of a graphene-doped polyacrylic acid and polyacrylamide polymer material, and is directly printed in a specified diaper area, so that wireless remote alarming of the urine and multicomponent simultaneous sensing analysis on the contents of urine sugar and common medicine generation products are realized, and the time of an analytical test is greatly shortened.