In order to solve the problems of crystal transformation and low forming efficiency of the main explosive in hexanitrohexaazaisowurtzitane （CL-20） based all-liquid explosive ink micro-jet printing， suspension explosive ink compatible with 3D micro-jet printing was designed and prepared by using polyvinyl alcohol （PVA） aqueous solution as colloidal suspension and micro-nano CL-20 particles as suspension particles. 3D micro-jet technology was used for printing the explosive ink. The properties of the samples were characterized by densitometer， laser confocal microscope， scanning electron microscope， X-ray diffractometer and nano-indentation instrument， respectively. The impact sensitivity， friction sensitivity， and detonation velocity of the samples were also tested， which was used for the study of the relationship between the content of CL-20 and the properties of micro-detonation agent. The results showed that the "coffee ring" phenomenon became more obvious with the increasing content of micro-nano CL-20 particles in the explosive ink， and the thickness of the single layer deposition of the powder line became thicker， while the density decreased gradually. The main explosive CL-20 exhibited no crystal transformation in the 3D microjet printing process and was ε type. When the ratio of micro-nano CL-20 particles to binder was 9∶1， the measured density of the sample was 1.638 g·cm^-3 （86.19% TMD）， and the elastic modulus was 5.43 GPa. The impact sensitivity， friction sensitivity and detonation velocity were 4 J， 240 N and 7689 m·s^-1， respectively， showing better safety performance and micro-scale detonation transmission ability.