China is a big pharmaceutical country, with the total output of 430,000 t of api by the end of 2001, ranking the second in the world and the processing capacity of preparation ranking the first in the world. Meanwhile, the pharmaceutical industry is also a high-energy consumption and high-pollution industry in china.during the 11th five-year plan on the part of the pharmaceutical companies in energy audit found that these enterprises can use unreasonable place still exist, such as enterprise energy management system is imperfect, the equipment management is rough, workshop environment, high energy consumption of the air conditioning, the level of enterprise energy conservation and emissions reduction measures small and pharmaceutical process optimization control remains to be perfect, and so on.