Abstarct: Aji-chay salt dome is located in the southwest of Mianeh city, located in the north of Mahenshan city and in East Azarbaijan province. Structurally, this area is located in the geological zone of central Iran and is a part of the southern part of the middle 1:100000 map. The lithological units of the region consist of marl, sandstone and conglomerate sediments along with evaporite sediments. In order to determine geological units and areas containing evaporite sediments, remote sensing studies were carried out from Aster and Landsat satellite images using ENVI software. Using the methods of band ratio, principal component analysis and angular spectroscopy, the areas containing halite, sulfate and iron-bearing areas were separated from each other. Also, geophysical studies were carried out with the method of gravimetry in order to determine the location of the salt dome. In this method, the geometries data collected in the area were analyzed and complete bouger maps, residual, first vertical derivative, transversal continuation and Euler's depth estimation method were performed. The results of these studies were the quantitative characteristics of the salt dome. such as the approximate depth, radius, area and range of its location. In the remaining map and the first vertical gradient, a negative anomaly has appeared in the form of a circle; The radius of this anomaly is approximately 85 meters and its approximate area is 22500 square meters. There is also a smaller and less intense anomaly around the main anomaly. The map of the tilt angle and the continuation map shows that the root of the smaller anomaly is connected to the main anomaly and the effect of the anomaly disappears after 100 meters. Therefore, taking into account that the anomaly caused a maximum of 200 micro gal difference with the background; It can be said that this anomaly does not have deep roots. These results are in accordance with the geological studies conducted by previous researchers, which indicate the shallowness of the salt domes in the Azerbaijan region; Is consistent.