Abstract: By means of the laboratory manufacture technology established by UST Beijing, emulsion explosives(EE) test samples sensitized by glass micro-balloons(GMB) were manufacture. Influence of GMB content and density of EE on the detonation velocity are studied. The detonation velocity characteristics of the industrial explosives are analysed. With the increase of the density of EE, the detoration velocity first increases to the top point, then decreases, untill the emulsion explosiues have been dead pressed.