Artificial intelligence (AI) is a multidisciplinary field where it automates activities but earlier it based on human intelligence. Generally the functions of AI are based on a knowledge base of facts and systems domain of proficiency. Artificial Intelligence is seen as the subfield of computer science and it has enhanced human life in many areas. Today AI is mostly used in medical diagnostics and also it had improved the performance in manufacturing and service systems. Nowadays experts systems are used to solve complex problem using AI such as Engineering business, medicine, Weather Forecasting. In general it is the science and engineering of making intelligent machines, especially intelligent computer programs.