In order to explore the new synthetic route of quinoxaline，1, 2, 3, 4-Tetrahydro-6H-indolo [2,3-b]quinoxaline was synthesized from Ortho-diaminocyclohexane and isatins by air oxidation.12 compounds were synthesized and their structures were confirmed by IR, 1HNMR and MS. Compound 9-fluoro-1,4-dihydro-1H-indolo[2,3-b]quinoxaline (Ⅰl ) and 9-methyl-1,4-dihydro-1H-indolo[2,3-b] quinoxaline (Ⅰm ) use X-ray diffraction analysis. The results showed that the target structures products were obtained.