disclosed are explosives , especially a preparation method for explosives of different densities and explosives of different densities . the method adjusts physical density by adding granular form physical density adjusting agent with 0 . 5 - 5 . 0 mm grain diameter and 0 . 03 - 0 . 30 g / cm3 bulk density when preparing explosives . the method can adjust the explosive &# 39 ; s density within a large range to produce the explosives with a wide range of detonation velocity to meet different needs for explosive velocity according to different lithology , and simultaneously meet needs for different explosives in the same blasthole .