The invention relates to a high-capacity adjustable simulation test load noise-reduction system. The system is arranged on an axial flow cooling fan. The cooling fan comprises vanes arranged on a shaft; the system comprises elastic devices which are perpendicularly disposed on the vanes; each elastic device comprises a screw, and a nut and a bolt of the screw; the screws penetrate through fixing holes formed in the vanes and are connected with shell supports of loads; the nuts and the bolts are sequentially arranged above the shell supports; elastic parts A are disposed between the shell supports and the vanes; elastic parts B are disposed between the vanes and the heads of the screws. By means of the high-capacity adjustable simulation test load noise-reduction system, the problems of vibration caused by rotation of the axial flow cooling fan and low-frequency resonance formed between simulated load shells are solved.