To study the influence of RDX-based metallized explosive components on detonation process，the detonation reaction zone parameters of RDX-based metallized explosives were studied by the interface particle velocity history using photonic Doppler velocimetry （PDV）. Two kinds of RDX-based metallized explosives were granulated， one composition incorporates aluminum （RDX/AP/Al）， and the other incorporates hydrogen storage alloy （RDX/AP/Al/B/MgH₂）. The metallized explosives were initiated by detonation wave， and the detonation reaction zone parameters were analyzed and compared with those of phlegmatized RDX. The results show that the addition of AP/Al component reduced the CJ detonation pressure of phlegmatized RDX from 25.8 GPa to 20.1 GPa. In addition， the detonation reaction zone time （53.6 ns） and length （0.29 mm） of metallized explosives were both higher than those of phlegmatized RDX （24.3 ns， 0.15 mm）. The addition of B/MgH₂ further increased the detonation reaction time （58.0 ns） and length （0.30 mm） of the explosive. The addition of high-energy metal fuel reduced the output pressure of explosives， but increased the detonation reaction zone time and length of explosives.