In order to study the effect of higher aliphatic ester compounds on the properties of RDX, six insensitive samples (RDX coated by 2, 3-bis(hydroxymethyl)-2, 3-dinitro-1, 4-butanediol tetralaurate (BHDBTL), 2, 3-bis(hydroxymethyl)-2, 3-dinitro-1, 4-butanediol tetrastearate (BHDBTS), 2, 3-bis(hydroxymethyl)-2, 3-dinitro-1, 4-butanediol tetra(12-hydroxyl stearate) (BHDBTHS) with mass fraction of 3% or 5%, respectively)were prepared. All RDX samples were characterized by infrared spectroscopy(IR), scanning electron microscope(SEM), laser particle size analyzer, differential scanning calorimetry(DSC), and their mechanical sensitivity were tested by GJB772-1997. Results show that the particle size of coated RDX decreases signally, and the specific surface area of RDX coated by 5% BHDBTL, BHDBTS, BHDBTHS increase from 0.0374 m²·g^-1 to 0.173 m²·g^-1, 0.344 m²·g^-1 and 0.328 m²·g^-1 , respectively. The decomposition heat of coated RDX increased, for addition of 5% BHDBTHS, the decomposition heat increases from 1479.1 J·g^-1 to 1912.5 J·g^-1. The impact sensitivity of RDX coated by 5% BHDBTL, BHDBTS and BHDBTHS are 28%, 48%, 52% and the friction sensitivity were 20%, 60%, 48%, respectively.