The detonation performances of aluminized explosives are the typical non-ideal detonations. Because of the multiphase flowing and reacting at the front of detonation, it was difficult to obtain the detonation parameters by calculation. Assumed that the metal particles have no reaction at the front of detonation, and have the same pressure and velocity with the detonation products, using the continuum model and the general C-J relation, the full equations were obtained. Given the data of experimental detonation velocity, we can obtain the detonation pressure, particles velocity and the released heat at the front of detonation by solving the full equations. The calculations of two explosives with different aluminium content show that with the decrease of detonation velocity, the detonation pressure, mass velocity and explosion heat also deceased. When the explosives with different aluminium contents have the same detonation velocity, the higher the aluminium content, the larger the detonation pressure and the explosion heat. The calculation assumptions and the calculation model also given discussed.