With the increase in the popularity of automobiles, a large amount of used motor oil is produced every year. If the used motor oil is discharged at will, it will have a great impact on the environment. On the contrary, if the used motor oil is handled properly, it can greatly alleviate the current tight oil resources. Among of many solutions, used motor oil distillation equipment can solve this problem very well, and can refine used motor oil into diesel oil. This refined diesel from used motor oil can be directly applied to diesel engines.