Thallium-bear oxide superconductors - are one of the latest achievements in the field of developing new compounds with laminated perovskyte structure, possessing high superconducting parameters. The given paper considers the main results of studying Tl-bear high-temperature superconductors (available in publications up to 1989), which analysis is necessary for selection of further development and study directions to produce high-conductivity wire. 54 refs.; 11 figs.; 3 tabs.