This research is emphasized on a study of Fischer-Tropsch synthesis for production of synthetic crude oil from synthesis gas. Cobolt catalyst (CO-0138) from the Harshaw Ltd. Is the suitable catalyst for this type of reaction. The experiment were done in fluidized bed reactor with experimental conditions are as follows : temperature from 180 [degree Celsius] to 240 degree Celsius] pressure 1atm H[subscript 2]/Co ratio 2 and 3 respectively. It was found that the conversation of synthesis gas increase with temperature and the suitable H[subscript 2]/Co ratio is 3. The optimum reaction condition for mere than 50% gasoline production is temperature 180 [degree Celsius] and H[subscript 2]/Co ratio 3.