The invention relates to a catalyst screening device and method for hydrolysis of CFCs. The device and the method are mainly characterized in that a catalyst can be replaced and recovered rapidly, and the problem that the catalyst is easily taken out by reaction gas is solved. As shown in the figure, CFCs gas passes through a water steam generator, a catalytic reaction bed (0.5-2mm quartz sand is adopted as a catalyst filling carrier, and quartz fiber is taken as a filler layer baffle plate in the bed), an exhaust gas condenser pipe, a gas-liquid separator, an exhaust gas absorption tube and an exhaust gas drying tube in order, then sampling is carried, and CG/MS is utilized to analyze CFCs degradation rate so as to evaluate the catalytic performance of different catalysts on CFCs, thus screening out the catalyst with high catalytic activity.