N-methyl-2-(3-nitrophenyl)fullerenopyrrolidine (MNPF) was synthesized with sarcosine, m-nitrobenzaldehyde and ［60］ fullerene as primary substances,the yield of MNPF was 95%(based on consumed C₆₀). Its structure was characterized by UV-vis, IR, MS and NMR. The thermal stability of MNPF was studied by differential thermal analysis (DTA), and the effects of MNPF on the mechanical sensitivity and friction sensitivity of HMX were investigated. The results show that MNPF has good thermal stability. Compared with that of pure HMX, the friction sensitivity and impact sensitivity of HMX with 1% MNPF can be decreased to 48% and 50%, respectively.