A reusable cat litter and a method for manufacturing the same are disclosed. The method includes a raw material pretreatment step: providing a shell powder performed with a calcination treatment, the calcination treatment being performed at a temperature range of 500-1200° C.; and a mixing and granulation step: mixing and granulating 70-90 parts by weight of the shell powder and 10-30 parts by weight of a non-adhesive powder to form the cat litter. Wherein, the shell powder has a particle size of 80-8000 mesh. The cat litter has a better deodorization effect and will not clump and can be reused after cleaning.
