This is a new type of silica gel cat litter made from high quality raw materials (silicon dioxide≥ 95%) by advanced production process. This new type of cluster cat litter has many advantages, such as strong water absorption capability, small cluster volume, odor remover, no dust, convenient cleaning, etc. It solves the problem that the ordinary silica gel cat litter cannot clot when it is used. The new type of the cat litter clots rapidly when contacting liquid. The moisture and the odor are firmly locked in the clumpy while the other cat litters remain dry. The clumpy can be cleaned by a cat litter scoop easily. It is sanitary and convenient. Such type of cat litter is softer and more comfortable. It is especially suitable for the cats who naturally love burying.