**7. Conclusion**

With the increasing development of fuzzy set theory in various scientific fields and the need to compare fuzzy numbers in different areas. Therefore, Ranking of fuzzy numbers plays a very important role in linguistic decision making, neural network and some other fuzzy application systems . Several strategies have been proposed for ranking of fuzzy numbers. Each of these techniques has been shown to produce non-intuitive results in certain case. In this chapter, we reviewed some recent ranking methods, which will be useful for the researchers who are interested in this area.
