We investigate the electroluminescence (EL) characteristics of a novel blue emitting material TPABMI.The results demonstrate the TPABMI with strong blue emitting and hole-electron transporting ability.Based on the performanc e,an un-doping blue organic light-emitting device (OLED) was fabricated.The blu e device structure is as follows:ITO/NPBX(40nm)/ TPABMI(20nm)/ TPBi(20nm)/ LiF(0.5nm)/Al(93nm).A series of blue devices were fabricated by inserting TCTA thin layer between the hole-hole transport layer NPB and emitting layer TPABMI,and inserting ITO buffer layer of MoO₃.It has the configuration o f ITO/MoO₃(10nm)/NPB(80nm)/TCTA(5nm)/TPABMI(20nm)/TPBi(40nm)/LiF(1nm)/Al(100nm).Blue OLEDs were obtained with the maximum emission wave-length at about 464 nm and the Commission International de L′Eclairage coordinates of (0.1509, 0.1438),the maximum luminance is 18970cd·m－2 and the maximum luminous efficiency of 5.48cd·A－1 at an applied voltage of 16V. The efficiency slightly varies from 6V (3.53cd· A－1) to 14V (3.66cd·A －1); The CIE coordinates slightly vary from (0.158,0.1469) to (0.1509,0.1438) when the vo ltage shifts from 6V (6cd·m－2) to 16V (18970cd·m －2).