The invention discloses an extending protecting sleeve for the urine receiving pool of a urinal. The extending protecting sleeve is composed of an extending protecting sleeve body and suction discs; opposite symmetric fastening pieces are arranged on the two sides of the extending protecting sleeve body and clamped on the outer sides of the vertical walls on the two sides of the urinal; a plurality of suction discs are mounted on the outer side of the edge part of the urine receiving pool arranged at the lower part of the urinal; a semi-ring-shaped foot edge is prefabricated on one side of the extending protecting sleeve body, matched with the outer side of the edge part of the urine receiving pool, and connected and fixed through the suction discs. The extending protecting sleeve disclosed by the invention has the advantages as follows: the phenomenon of urine spattering can be effectively avoided, and the leakage phenomenon during urinating can be avoided; the extending protecting sleeve is simple in structure, convenient to mount, dismount and clean and low in manufacturing cost; when the extending protecting sleeve is used in coordination with the conventional floor type ceramic urinal, the phenomena of urine scattering and urine leakage are avoided, and high cost caused by updating and improving the conventional floor type ceramic urinal is avoided.