The prefabricated bed for the animal which includes the mat part of the frame part: multiple brackets: mesh shape equipped with the joint equipped with multiple second through-holes which are equipped in the upper side of multiple leg parts and frame parts which are inserted into the second insertion part equipped in multiple bracket each bottom surfaces and are formed from the bottom surface into the vertical downward and correspond to multiple first through-holes and includes two first insertion parts in order to connect two pipes among multiple pipes, consisting of multiple pipes equipped with multiple first through-holes is combined through multiple nuts connected in the bolt of multiple bolts and multiples in which the mat part and frame part pass through the second through-hole of multiple first through-holes and multiples.