Abstract: A method for fast evaluating the performance of FCC slurry antifoulant in laboratory is introduced. Using an autoclave with stirring, the suitable test conditions are obtained by orthogonal tests as follows：an antifoulant added amount of 100 mg/L, heat to 500 ℃and hold for 4 h. The test results obtained by this modified static evaluation method are compared with those from the dynamic simulation method, and their trends of ranging antifoulants by fouling inhibited rates are in good agreement, which indicates that this method could be used to fast evaluate slurry antifoulant in laboratory.