The utility model provides a sulfur recovery tail gas condensation separator, top -down is connected to form by last barrel, cooling zone barrel and lower barrel, goes up the barrel and is the tail gas feed zone, and the top is provided with the tail gas import, and the entrance of tail gas import is equipped with air distributor, the cooling zone barrel is the tail gas cooling zone, and include last tube sheet, the lower tube sheet at both ends and set up heat exchanger tube bundles and the baffling board group between two tube sheets, heat exchanger tube bundles become by a plurality of parallel arrangement's heat exchange tube group, baffling board group comprises in the baffling board of barrel inner wall both sides crisscross installation the about a plurality of, is equipped with the tube hole on the baffling board, heat exchanger tube bundles passes the tube hole vertical fixation between two tube sheets, the barrel is molten sulfur segregation section down, is equipped with the tail gas export on the upper portion lateral wall of lower barrel, and the bottom is equipped with the molten sulfur export, and outer jacket has been cup jointed to the hypomere outside. The utility model provides a sulphur recovery unit export tail gas problem of carrying sulphur steam, has reduced tail gas SO2 and has discharged, improved device sulfur recovery rate.