The invention discloses a low-density light-scented particulate cat litter which is characterized in that the cat litter is prepared from the raw materials of, by weight, 35-40 parts of modified straw charcoal, 5-7 parts of perlite, 4-7 parts of lemon peel, 5-7 parts of grapefruit peel, 8-10 parts of cork dust, 14-16 parts of natural sodium bentonite, 6-7.5 parts of polyvinyl alcohol, 1-1.5 parts of polymeric ferric sulfate, 3-4 parts of argy wormwood leaf, and 45-50 parts of water. According to the invention, advantages of various cat litters are combined, and the cat litter is prepared into a double-layered structure. An inner layer is the modified straw charcoal prepared from components such as plant straws, such that a porous absorption effect is good. The modified straw charcoal comprises antibacterial components such as eucalyptus oil, such that a long-lasting antibacterial effect is realized. An outer layer comprises the components such as natural sodium bentonite, grapefruit peel and cork dust, such that a water absorption effect is good. The cat litter comprises the argy wormwood leaf component, such that the cat litter is lightly scented, and the cat litter is beneficial for pets. The cat litter provided by the invention has the advantages of high water absorption efficiency, fast drying, low density, high hardness, and good antibacterial effect.