The one-pluse-process plasma electrodes Pockels cell has been established. Five pieces of KDP crystals with 50 mm×50 mm are inserted into the specific areas in the aperture instead of the one-piece crystal with 400 mm×400 mm to investigate the temporal behaviour of the Pockels cell. Owing to the optimum designs,the full aperture high conductive plasma has been created,and the breakdown of the operating gas is stable. The measured switching efficiencies of full aperture are higher than 99.5%. At the neon pressure of 1200 Pa and 2000 Pa,the rise-times of the Pockels cell with full-scale KDP crystal are 78.4 ns and 80.7 ns,respectively.