The effective pressure of various Al-containing explosives was calculated by PMMA method. Through the track of shock in PMMA,we analyzed and compared the energy-released process of various Al-containing explosives. The results indicated that when the ratio of RDX/AP kept constant,as aluminium content increased,the effective pressure of Al-containing explosives decreased at shock front and at the later stage the energy-released increased. When aluminium content kept constant,as the ratio of RDX/AP increased,the effective pressure of Al-containing explosives increased and at the later stage the energy-released almost reached consistent.