The research considers the effects of chemical cleaning of metal archaeological artefacts, made of silver, copper, bronze, lead and iron, from the archaeological sites in modern Serbia of Felix Romuliana (Gamzigrad) in the vicinity of Zaječar and Gradina (Jelica) near Čačak. Due to various corrosive products, artefacts were treated with different chemical solutions: citric acid, ethylenediaminetetraacetic acid sodium salts: EDTA-Na 2 and EDTA-Na 3 . Corrosion products and surfaces before chemical treatments as well as products on various metal artefacts after chemical treatments were observed by SEM-EDS microanalysis. As expected, the EDTA-Na 2 solution removed all lead corrosion products (carbonates) within a very short period of time, whereas citric acid was most efficient in removing copper corrosion products (malachite, cuprite). As for the EDTA-Na 3 solution, impurities and corrosion products of silver (oxides) and copper (malachite and cuprite) were gradually removed, whereas the solution was partially selective in the silver sample. In iron deposits, corrosion layers such as goethite and magnetite were unevenly removed using the EDTA-Na 2 solution and citric acid. This research provides insights into the efficiency and risk estimation of the chosen chemical treatments, including the transformation of corrosion products, formation of chemical residual substances and the physical effects of the treatments.