Simple and conveniens batch-type detection cells were developed for the capillary electrophoresis with chemiluminescence detection using peroxyoxalate reagent. A fused-silica capillary was directly inserted into the cell, and a grounding electrode was also done into it. The cell could be easily combined with capillary electrophoresis without any complex construction and expensive implements. A mixture of Dnsyl-amino acids was satisfactorily separated. Dnsyl-Trp was detected with the detection limit of 1 x 10(-8) M by use of a glass cuvette-type cell.