Understanding the economic interactions of regions with other regions and countries and identifying their capacities are essential for the economic development of regions. Therefore, this study Prioritizing and estimating the trade of Iran's provinces using the multi-regonal input-output table and the Entropy-Taspis method . In the estimation of inter-regional and foreign trade, a multi-regional input-output table was used, which was constructed with the Charm-Ras method. After estimating the trade of 31 provinces, the sectors and provinces have been prioritized using the Topsis-Entropy method. The results were obtained by first ranking the provinces and then the sectors, and it was found that Tehran ranks first in interregional and foreign imports and foreign exports among the 31 provinces of Iran. Khuzestan province ranked first in interregional exports, with oil and natural gas having the highest inter-regional export value. The ranking results of sectors indicated that the oil and petroleum products sector had the largest interregional imports, interregional exports, and foreign exports. The service sector had the largest foreign imports. In the second place, the most inter-provincial imports, inter-provincial exports, exports to the outside world are respectively related to other basic metals, service sector and gas, water and electricity sector, and also the import from outside the world of water, gas and electricity is the most , In fact, the ranking of regions and sectors helps regional planners in the proper allocation of resources.