Abstract: With GaN blue light emitting diodes（LEDs）,high-power white LEDs（W-LEDs） were packaged with yellow poly-silicate phosphor.In this paper,W-LEDs lamps were made by 24 pieces high-power W-LEDs in two different connection ways: 2-parallel with 12-series,and 6-parallel with 4-series.With a proper driving circuit for the high-power W-LEDs lamps,the I-V characteristics,current illumination characteristic,power,and efficiency of the two different connections were studied,the experiment result showed that 2-parallel with 12-series W-LEDs lamp had better properties than that of the 6-parallel with 4-series W-LEDs lamp.W-LEDs lamps also have advantages of low power consumption,high reliability and stability compared with high-pressure sodium lamp and fluorescent lamp.