Expert system is a sub area of artificial intelligence, and we can say it is system that it has performance and work like a human expert in some good matters so we can say it is a system that will use the human knowledge captured in a computer to solve problems that usually required human expertise. The developments of expert systems are done in different areas. In this paper we will survey on different works have been done earlier in different ways using Expert System (ES) for various areas and various applications of expert systems of knowledge that had used in real world. The survey includes the following areas: Medical, Education, Automobile and Agriculture for duration from 2010 to 2014 in different countries.