An animal litter box package body comprising: an animal litter box that has an opening in an upper portion and can store animal excrement; an accessory used for the animal litter box; and a case for packaging the animal litter box and the accessory, wherein the case includes a top face portion that covers at least the opening, a case bottom face portion that is in contact with a bottom face portion of the animal litter box, and a pair of side face portions facing one another; at least the top face portion is configured of a transparent sheet-like member; and the animal litter box package body further comprises an accessory storage container that stores the accessory and has a height from a top face of the bottom face portion to the top face portion of the animal litter box, wherein the animal litter box includes: a high friction region that is formed on the top face of the bottom face portion of the animal litter box; an upper container that allows an animal to enter and leave, the upper container having an upper bottom face portion provided with liquid permeable through holes; and a lower container that is disposed below the upper container, wherein the high friction region is configured of the through holes, wherein the accessory storage container includes: a storage container main body in which the accessory is stored; and a projection portion that protrudes from a lower end portion of the storage container main body, and wherein the projection portion engages with the through holes in a state in which the accessory storage container is arranged on the upper bottom face portion. an animal litter box that has an opening in an upper portion and can store animal excrement; an accessory used for the animal litter box; and a case for packaging the animal litter box and the accessory, wherein the case includes a top face portion that covers at least the opening, a case bottom face portion that is in contact with a bottom face portion of the animal litter box, and a pair of side face portions facing one another; at least the top face portion is configured of a transparent sheet-like member; and the animal litter box package body further comprises an accessory storage container that stores the accessory and has a height from a top face of the bottom face portion to the top face portion of the animal litter box, wherein the animal litter box includes: a high friction region that is formed on the top face of the bottom face portion of the animal litter box; an upper container that allows an animal to enter and leave, the upper container having an upper bottom face portion provided with liquid permeable through holes; and a lower container that is disposed below the upper container, wherein the high friction region is configured of the through holes, wherein the accessory storage container includes: a storage container main body in which the accessory is stored; and a projection portion that protrudes from a lower end portion of the storage container main body, and wherein the projection portion engages with the through holes in a state in which the accessory storage container is arranged on the upper bottom face portion. a high friction region that is formed on the top face of the bottom face portion of the animal litter box; an upper container that allows an animal to enter and leave, the upper container having an upper bottom face portion provided with liquid permeable through holes; and a lower container that is disposed below the upper container, wherein the high friction region is configured of the through holes, wherein the accessory storage container includes: a storage container main body in which the accessory is stored; and a projection portion that protrudes from a lower end portion of the storage container main body, and wherein the projection portion engages with the through holes in a state in which the accessory storage container is arranged on the upper bottom face portion.