In this paper, the model that we constructed to simulate the structure of Fe75P25 is taken as the primary configuration. Then this configuration is subjected to relaxation under the quasi-dynamic equilibium boundary through th tail-truncated Morse potential (energy minimization). The total energy, reduced distribution function coordination number, angular distribution function and homogeneity are obtained from the calculated data. The short lange order in amorphous alloy Fe75P25 is disclssed.