Direct ink writing (DIW) is a new trend in the micro-scale charging of energetic materials. In this study, a CL-20 based composite was prepared using DIW, and its properties were characterized. Results indicated that the particles of the composite are found at the sub-micron level, and a single layer measures at 2.4 mu m. The composite has high density and low impact sensitivity, and its critical detonation size is around 1x0.4 mm. This feature will contribute to the detonation at the micro levelto a certain degree.