The invention discloses a detachable trash can which comprises a can body. The can body is formed by splicing two or more shells. Base plates which can be spliced to form a complete can bottom are integrally formed at the bottoms of the adjacent shells separately. Left half bosses and right half bosses of the adjacent shells are hooped together through snap rings to enable the shells to be fixedly spliced together so as to form the needed trash can. When in use, the detachable trash can can be disassembled into a plurality of parts by dismounting the snap rings so as to facilitate transporting; the shell on one side of the trash can can be replaced freely when damaged, and the whole trash can does not need to be scrapped or thrown away; meanwhile, a connecting rod can be made a perpendicular status or be clamped in the through holes in a horizontal status so that the can body can be fixed while the trash can body can be taken out freely.; and the left half bosses and the right half bosses of the adjacent shells are hooped together through the snap rings to enable the shells to be fixedly spliced together so as to form the needed trash can.