Abstract: Three dimentional fuzzy matter element analysis, a new method for evaluating gas gathering options, determines the optimal based on the magnitude of evaluation value, taking its three main factors (loss, cost and condition)as three dimentional evaluation model. A complex fuzzy matter element is established on the basis of the main factors' features and dependance. With the complex fuzzy matter element of correlation transformation and correlation coefficient set up, the concept of correlation degree and the calculation method are introduced. The complex matter element for evaluating any main factor can be obtained by combining the weighted complex matter element (weighted by its correlation degree)with its grade complex matter element. Finally, the optimal option can be determined according to the evaluation value. This analysis method is proved reliable with practical cases.