The utility model discloses a sewage treatment equipment, including the anaerobism of arranging in proper order district I, anoxic zone II, good oxygen district III, slurry separation zone IV and mud district V, wherein, good oxygen district III is provided with an aeration equipment, mud district V is provided with the 2nd aeration equipment, with an aeration equipment is connected with gas transmission main line (1) and reaches the fan of connecting is gone up in gas transmission main line (1), be connected with gas transmission bye -pass (2) on gas transmission main line (1), gas transmission bye -pass (2) be connected with to gaseous aeration conveyer pipe (8) of second aeration transportation equipment, sewage treatment equipment is still including being used for the messenger anoxic zone II good oxygen district III and/or the air stripping device of the sewage backward flow among the slurry separation zone IV. The utility model provides a sewage treatment equipment can dispose of sewage more effectively, fully consumes mud, and equipment is simple, energy -conserving moreover to can realize unmanned on duty.