Abstract: The behavior of flammability of industrial ghee, edible ghee and paraffin had been investigated by using cone calorimeter at incident heat flux of 50 kW/m 2 in this paper, basing upon the parameters, such as time to ignition (TTI) , specific extinction area (SEA) , peak heat release rate (pk-HRR) , total heat release (THR) , effective heat of combustion (EHC) , peak smoke production rate (pk-SPR) , total smoke production (TSP) and mass loss rate (MLR) , etc.The results were obtained as follows:industrial ghee and edible ghee were easily ignited than paraffin.The flammability of industrial ghee was close to the flammability of paraffin, their flammability and fire index were higher than edible ghee.The amount of soot of edible and paraffin were lower than industrial ghee in the combustion process, edible and paraffin burned completely than industrial ghee.The heat release rate lagged behind the smoke release rate, the mass loss was mainly caused by the release of the flue gas.In a steady state, the combustion was characterized by decreasing the smoke release rate and increasing the heat release rate.