To expand the design range of micro-booster explosives， four fully liquid explosive inks were formulated by using benzotrifuroxan （BTF） as the main explosive with low detonation critical size characteristics and planar-like structure， nitrocellulose （NC） and glycidyl azide polymer （GAP） as binders， and ethyl acetate as the solvent. The BTF/NC/GAP energetic composites were constructed using inkjet printing technology. The microstructure， critical size of detonation， and detonation propagation performance of the composites were systematically investigated. Results show that the main explosives in BTF/NC/GAP composites exist in a flake-like structure with particle size mainly ranges from 1 to 10 μm. The composites have excellent energy storage properties and micro-scale detonation propagation capability， achieving over 90% of their theoretical energy output. The critical size of detonation reaches a minimum of 1 mm×0.102 mm （2% NC/GAP content）， while the maximum detonation velocity attains 8436 m·s^-1（5% NC/GAP content）. Moreover， the increased NC/GAP content induces a transition from nano- to micro-scale pores within the composites， enhancing the probability of hotspot formation and improving the efficiency of energy release. At 10% NC/GAP content， the ratio of experimental to theoretical detonation velocity peaks at 94.61%， demonstrating more complete energy release characteristics and stable detonation propagation.