Since it plays a significant role in the best choice of industry and science, it is always chosen to find the job that can be more accurate. One of these methods is the TOPSIS method.In this article, after introducing the DEA and TOPSIS methods, we will introduce the TOPSIS-DEA method and then we will expand this method for interval criteria. In this method, there is no need to know the exact weight of the qualities, and this method deals with the best option without changing the qualitative qualities. This method is a suitable method for choosing the best option when the data is an interval. And it is faster than the classic method. Manuscript profile

Data Envelopment Analysis (DEA) is an efficient method to perform evaluation of units. In DEA we try to evaluate units with undesirable factors in input & outputs by satisfaction function, testing some models. On the other hand benefiting this concept, we can identify non-efficient units. Also we can recognize why these units are inefficient and calculate the reason of their inefficiency and how they turn efficient. In DEA we cannot know why some units are non -efficient and how these units can be efficient, but by this paper we can do this work. Manuscript profile