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The determination method for the trace lead and cadmium in glass materials was developed by ICP-AES. The lead- and cadmium-DDTC chelates were formed by adding Na-DDTC (sodium diethyldithio-carbamate) as a chelating agent and extracted into MIBK (methyl-isobutyl ketone). Direct measuring of thetrace lead and cadmium in glass was not possible because of the interferences of matrix elements as Na, Si,Mg and Ca of glasses unles solvent extraction of lead and cadmium was applied. This procedure was confirmedit procedure to artifact sample and NIST SRM 1412.