It is widely used as desulfurization purification emulsifier and acid gas absorbent of oil field gas and coal gas, acid-base control agent, polyurethane foam catalyst. The carbon dioxide in synthetic ammonia can be removed with the participation of activators, so it has been gradually promoted in the absorption of carbon dioxide in flue gas in recent years. In addition, MDEA can also be used as pesticides, emulsifiers, semi-finished products of fabric auxiliaries, intermediates of anti-tumor drugs chlorambucil hydrochloride, catalysts for urethane coatings, fiber auxiliaries, etc. At the same time, it is also a kind of paint Drying agent.