Based on hybrid white light structure ITO/HAT-CN(10nm)/TAPC(30nm)/T CTA(10nm)/TCTA:PO-01(10nm,4%)/MA DN:DSA-ph(10nm,5%)/BPhen(40nm)/Liq(1nm)/ Al(100nm),CBP,SO and SO:TCTA were used as spacer layers,and the thickness an d doping ratio were adjusted to study the effect of different spacer layers on t he performance of the hybrid white light device.The experimental results show t hat the use of SO as a spacer layer can effectively enhance the recombination of electrons and holes in the yellow light emitting layer,increasing the electron transport capability of the device and cause the device to white light,and imp roves device efficiency.And due to the high triplet level of SO,the movement o f the excitons recombination region can be effectively controlled,and the color stability is also improved.Then doping TCTA and SO as a spacer layer to enhanc e hole transport,regulate the transport and balance of holes and electrons,and further improve device performance.When the doping ratio of SO∶TCTA is 9∶1,the device pe rformance can be further improved,and the maximum current efficiency is 31.60c d/A and the maximum power efficiency is 30.16lm/W.When the current density is 10mA/cm²,the CIE coordinate is (0.39,0.43),From 0.1mA/cm²－80mA/cm^2cur rent density the CIE coordinates change (Δx,Δy) is only (0.02,0.01),showing small color drift,good color stab ility.