As we entered the 21^th century and the non-renewable energy was excessively exploited and our ecological environment was badly damaged，the industrial production was heading into the orientation of environmental protection and sustainable development，therefore the research on developing environmental friendly renewable energy is becoming increasingly important to our social development，while biodiesel was paid much more attention by domestic and foreign government and many energy companies due to its superior performance in environmental protection，regeneration capacity，high content of oxygen and full combustion. Global biodiesel has achieved rapid development in recent years，especially in EU，US，Brazil，Indonesia and Argentina，where the development and usage of biodiesel were achieving much success. The biodiesel industry in our country also obtained some progress but still is facing some problems such as shortages of raw materials，the difficulty of collecting kitchen waste. Therefore it is better to suggest our government to actively promote and guide the development of biodiesel，and gradually establish the long-term mechanism of biodiesel industry.