In order to investigate the energy characteristics of RDX based boron-contained explosive,the heats of detonation (Q_det) of seven explosives: RDX/B/EVA-90/8/2,RDX/B/EVA-88/10/2,RDX/B/EVA-86/12/2,RDX/B/EVA-83/15/2,RDX/B/EVA-78/20/2,RDX/B/EVA-75/23/2,RDX/B/EVA-68/30/2 mixtures were measured by standard method of GJB772A-97-701.1,and theoretical calculation of Q_det was performed. The results show that there is a linear relationship between the heats of detonation of explosive mixtures and the boron content in the range of 8% to 20%,indicating that boron powder makes the value of Q_det of RDX increase. The measured and calculated maximum heats of detonation are 7162 kJ·kg^-1 for RDX/B/EVA-78/20/2 mixture with B/O ratio of 0.87 and 8967 kJ·kg^-1 for RDX/B/EVA-83/15/2 mixture with B/O ratio of 0.61 respectively. After maximum values of Q_det, with increasing the boron content,the value of Q_det decreases.