A new energetic burning rate catalyst, fullerene ethylenediamine nitrate, was synthesized using fullerene, ethylenediamine and dilute nitric acid as raw materials. The structure was characterized by UV-Vis, FT-IR, elemental analysis and XPS. The thermal decomposition characteristics were investigated by thermogravimetric analysis(TG) and differential thermal analysis (DTA), and the thermal decomposition process was traced through TG-FTIR technique. Results show that the molecular formula of fullerene ethylenediamine nitrate is H₁₆C₆₀(H₂NCH₂CH₂NH₂·HNO₃)₁₆. The degradation of fullerene ethylenediamine nitrate is two-stages process : the first-stage with 40.8% weight loss occurred in the temperature range 100~250 ℃, intense decomposing of NO₃^-, part of the branched chain decomposing, and releasing H₂O, CO₂, CO, N₂O and NO₂. The second-stage with 59.2% weight loss occurrs in the temperature range 250~580 ℃, decomposing of residual branched chain on carbon cage, carbon cage decomposiing and releasing CO₂, revealing that the fullerene ethylenediamine nitrate has good thermal stability.