Aeration technology and equipment are always the main part in the activated sludge treatment technology.But now there are many deficiencies in using aeration equipment,thus giving an impact on the running of treatment technology on the whole.The suspended chain moving aeration technology and equipment will be introduced in three parts;mainly about the reform of aeration equipment,running technology and structure form of the traditional aeration technology.These researches presents a way to build a sewage plant in our country with a low investment and high efficiency and makes it possible to increase sewage treatment efficiency in a short time.