[en] Full text: Radiation background in a zone of the Kurdamir - Qakh - Zagatala - Sheki was studied. We have determined that a radiation background is in a interval 8-10 μR/h in Kurdamir region. In this region water is characterized with radioactivity 9-11 μR/h and ground is characterized as 10-13 μR/h. Radiation background in Qakh region is also the same as a natural background. Territory of the Zagatala region is suitable from point of radio-ecological measurements. Natural radiation background in this region is very high comparing with the above-mentioned regions and radiation background is 15 micro R/h in several places of this region. This value reaches even 19-20 μR/h in the territory of nature reserve located in this region. Radioactivity of water is 15-16 micro R/h, of ground - 22-23 μR/h, of several buildings - 24-26 μR/h in the territory of Zagatala. In the territory of the training center of the National Academy of Sciences, located in Zagatala natural radiation background is 10 μR/h, but it is 18 μR/h in tobacco fields, 20 μR/h in sweet-brier field and 17 μR/h in tea field. There are no places with high radiation in Sheki region, except the places locally polluted. This region is characterized with intensity of radiation 8-10 μR/h. But radiation background reaches 20-25 μR/h in several wards and consulting-rooms of central inter regional hospitals. The same high radioactivity was observed in the buildings of boarding house called 'Soyugbulag'. It was found that the reason of the high level of radioactivity in the above-mentioned buildings and hospitals are bricks brought from Zagatala for construction of buildings