The invention discloses an air cooling temperature-controlled re-combustion chamber for direct reduction. The air cooling temperature-controlled re-combustion chamber comprises a re-combustion chamber body (1), and a smoke combustion system and a smoke cooling system which are arranged on the re-combustion chamber body, wherein the smoke combustion system and the smoke cooling system are same systems, and each system comprises a plurality of grades of air supplying systems (7) which are distributed at intervals from bottom to top along the height direction of the re-combustion chamber (1); each grade of air supplying system (7) comprises an air inlet pipe (8); each air inlet pipe (8) is provided with a plurality of air nozzles (9) for carrying out constant-temperature combustion in the re-combustion chamber body (1). The re-combustion chamber can be used for controlling that the temperature of each combustion region is not more than 1000 DEG C; various defects of a water cooling manner are effectively eliminated so that the requirements on various parameters including smoke temperatures, smoke oxygen-containing content, physical enthalpy, steam content and the like by adopting a follow-up process are met with high standards.