Thermal decomposition behavior of 3, 3′-diamino-4, 4′-azoxyfurazan(DAOAF) was studied by TG-DTG and DSC, and the kinetic parameters for thermal decomposition of DAOAF were calculated by Kissinger method and Flynn-Wall-Ozawa method. The specific heat capacity of DAOAF was determined using continuous specific heat capacity modes of a DSC apparatus. According to the relationship between specific heat capacity and thermodynamic functions, the enthalpy, entropy, Gibbs free energy increments of DAOAF from 253 K to 373 K, relative to the standard temperature 298.15 K, were calculated. Results show that DAOAF is an energetic material decomposing with melting. The average activation energy (E) and pre-exponential factor (A) are 152.23 kJ·mol^-1 and 10^12.53 s^-1, respectively. In the range of 253-373 K, the specific heat capacity (c_p) versus T relationship can be fitted into a simple equation: c_p(J·g^-1·K^-1)=0.00303T+0.17235. The standard molar heat capacity of DAOAF is 228.05 J·mol^-1·K^-1 at 298.15 K.