The invention relates to a chair, in particular to a detachable rattan chair. The detachable rattan chair comprises a rattan chair seat, a rattan chair backrest and armrests, and is characterized in that the rattan chair seat comprises an upper supporting frame, a lower supporting frame, and supporting columns and supporting tubes for connecting the upper supporting frame and the lower supportingframe; the upper half parts of the supporting tubes are hollow; each armrest comprises an armrest framework and two armrest tubes on the side surfaces; the armrest framework is integrally inclined outwardly and is in arc-shaped connection with the armrest tubes; the lower half parts of the armrest tubes are hollow and sleeve connecting tubes; the connecting tubes are fixed to the inner walls of the armrest tubes in a welding manner; the connecting tubes are sleeved by the hollow parts of the supporting tubes and are movably connected with the supporting tubes. The detachable rattan chair has the advantages as follows: after detachment of the rattan chair backrest and the armrests, the rattan chair seat has diverse functions, so that the rattan chair can be used as a chair and a side tableand can be used for placing tea sets and the like or for playing games; during storage, the rattan chair backrest and the armrests are detached, and the rattan chair seats can be placed in an overlapping manner, so that the space is saved.