To investigate the chemical origination of organic molecules CH_3OH, CH_3OCH_3, C_2H_5OH,CH_3OCH, CH_3 CN, C_2H_3 CN and C_2H_5 CN in the hot core associated with high-mass star formation region G34.26+0.15, Submillimeter Array observations were made with its 230 GHz receiver. The molecular gas distribution has shown that the oxygen- and nitrogen-containing molecules peak at different positions.Comparing the spatial distributions with rotational temperatures and fractional abundances of the observed molecules, we discuss the possible chemical origination of these organic molecules.
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