[[abstract]]Environmental sustainability is an important issue required public investment from all governments worldwide. Currently, Taiwan government is heavily investing to promote the so-called “Free Trade and Green/Ecological Port” in Kaohsiung. There are many articles review the free trade port management practice. However, extant researches on the performance indices of green ecological port are very limited. How to set up a set of performance indices for a green/ecological port is thus becoming very important from the government’s viewpoint. This research reviews and summarizes the green/ecological port performance indices and rank the importance of each performance index. First, extract four critical factors for achieving anticipated effects by factor analysis, and AHP method used in weighting the importance. Finally, an IPA model is employed to evaluate the overall performance of the ecological ports in Taiwan.