Focusing on the fact that the study of high-repetition-frequency laser jamming to different coding systems is little,the normalized cross-correlation function is adopted to quantify the effect of high-repetition-frequency laser jamming on different coding systems in classification process. Simulation results indicate that the effect of high-repetition-frequency laser jamming to different coding systems exists differences; When the laser frequency exceeds 120kHz,the efficiencies of the jamming to different coding systems are almost 100% and there is no significant difference between the coding systems.