TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The biodiesel comprises plant oil ethanediol alkyl ester ether, plant oil propylene glycol alkyl ester ether, and plant oil butanediol alkyl ester ether.The plant oil ethanediol alkyl ester ether comprises plant oil-ethanediol methyl ester ether, -ethanediol ethyl ester ether, -ethanediol propyl ether or -ethanediol butyl ether; -diethylene glycol methyl ester ether, -diethylene glycol ethyl ether ester, -diethylene glycol propyl ether ester and -diethylene glycol butyl ether ester; -triethylene glycol methyl ester ether, -triethylene glycol ethyl ether ester, -triethylene glycol propyl ether ester and -triethylene glycol butyl ether ester; and -tetraethyl glycol methyl ester ether, -tetraethyl glycol ethyl ether, -tetraethyl glycol propyl ether and -tetraethyl glycol butyl ether.The plant oil-propylene glycol alkyl ester ether comprises plant oil-propylene glycol methyl ether ester, -propylene glycol ethyl ether ester, -propylene glycol propyl ether ester and -propylene glycol butyl ether ester; -dipropylene glycol methyl ether ester, -dipropylene glycol ethyl ether ester, -dipropylene glycol propyl ether ester and -dipropylene glycol butyl ether ester; and -dipropylene glycol methyl ether ester, -dipropylene glycol ethyl ether ester, -dipropylene glycol propyl ether ester and -dipropylene glycol butyl ether ester.The plant oil-butanediol alkyl ester ether comprises plant oil-butanediol methyl ether ester, -butanediol ethyl ether ester, -butanediol propyl ether ester and -butanediol butyl ether ester; and -diethylene glycol methyl ether ester, -diethylene glycol ethyl ether ester, -diethylene glycol propyl ether ester and -diethylene glycol butyl ether ester.The biodiesel further comprises edible oil kind and inedible oil kind; edible oil kind comprising plant oil generated by plant fruits and soybean oil, colza oil, peanut oil, sunflower seed oil, oil-tea seed oil, olive oil, cotton seed oil, rice oil, palm oil, manioca oil, Pistacia lentiscus oil, Sapium sebiferum oil, tung tree oil, brook feather oil, rubber seed oil, tea seed oil, Cornus wilsoniana oil, almond oil, pepper seed oil or Chinese birch seed oil generated by hydrobiontic algae; and inedible oil kind comprising repast waste oil and illegal cooking oil.The biodiesel amount is 10-30% of normal diesel oil.The cotton seed oil diethylene glycol methyl ether ester is used as fuel, with discharging performance additive of No.0 diesel oil, at 20-25%.The cotton seed oil triethylene glycol methyl ether ester is used as fuel, with discharging performance additive of No.0 diesel oil, at 20-25%.The palm oil glycol butyl ether ester is used as fuel, with discharging performance additive of No.0 diesel oil, at 23-27%. The palm oil propylene glycol methyl ether ester is used as fuel, with discharging performance additive of No.0 diesel oil, at 23-27%.