Abstract: SD-01 shape-selective disproportionation catalyst was used in TSD (toluene shape-selective disproportionation) unit，Yangzi Petrochemical Co. Ltd. Half a year’s operation showed that toluene conversion ratio was 29%，PX/∑X=89%，(benzene+C₈A) yields was 97%，freezing point of benzene was 5.47℃. Such parameters as weight hourly space velocity，reaction temperature，reaction pressure and n(H₂)/n(HC) influenced the optimized operation of the unit greatly.