Despite the benefits such as the use of clean fuel, the independence of the urban road network and high capacity in handling passengers, in some cases, due to inappropriate places of stations, the metro network is not efficient. Therefore, it is essential to plan the location of metro stations and networks, as the most important public transportation vehicle and also the most expensive ones (from the perspective of establishing and setting up), using of modern science and technology. This research proposes a methodology, including using geographic information system (GIS), to evaluate the initial plan, identifying the influential criteria in locating the metro stations, utilizing analytical hierarchy process (AHP) to determine the weights of criteria, identifying the metro stations that require modifying the location, proposing a number of options to change the current position of the unsuitable metro stations and ultimately using of Technique for Order of Preference by Similarity to Ideal Solution (TOPS IS) model for choosing the best option. The proposed method was able to accurately evaluate the current situation of the metro stations planned for line-3 in Tehran city. The final output of this research demonstrates improvement of the metro network based on modification of the position of stations with low suitability and also the route passing through them.