A smart self-cleaning electric odor-removing and litter-adding pet litter box, comprising a seat body (1), a litter box (2), a litter adding device (3) and a waste litter collecting device (4)； a first cavity (11) and a second cavity (12) are provided at an upper end of the seat body (1), a tail end of the litter box (2) is embedded into the first cavity (11) and is rotatably connected thereto, and a front end of the litter box (2) is slidably connected to a ball (261)； a filter plate (29), a waste litter discharge port (28), an air hole (21) and an odor removing device (27) are provided within the litter box (2)； the litter adding device (3) comprises a litter box (30) fixedly provided on the seat body (1), an electric control valve (31) provided at the bottom of the litter box (30), and a telescopic pipe (32) communicating the litter box (30) with the litter box (2)； and the waste litter collecting device (4) comprises a box body (41) and a protruding block (42), the box body (41) being provided within the second cavity (12) and being slidably connected thereto, and sealing gaskets (43) being provided at openings of the box body (41) and the second cavity (12). The smart self-cleaning electric odor-removing and litter-adding pet litter box has the advantages of simple structure, being convenient to use, high degree of intelligence, good odor removing effect, etc., effectively solving the problem that the existing pet litter box needs manual cleaning and litter adding.L'invention concerne une caisse à litière intelligente pour animal domestique autonettoyante, électrique, à élimination d'odeurs et à ajout de litière, qui comporte un corps de siège (1), une caisse à litière (2), un dispositif d'ajout de litière (3) et un dispositif de ramassage de litière usagée (4) ； une première cavité (11) et une seconde cavité (12) sont disposées au niveau d'une extrémité supérieure du corps de siège (1), une extrémité arrière de la caisse à litière (2) est incorporée dans la pr
