In view of the phenomenon of thrust bearing tile burning during the operation of highspeed turbocharger,the causes of tile burning were analyzed from the two aspects of the maximum oil film temperature and the bearing center temperature.The influence of dip angle of the tile on the oil film temperature was discussed.Taking the thrust bearing of automobile turbocharger as an example,the influence of dip angle of the tile on the maximum oil film temperature and the temperature of the bearing centre area was studied by establishing the finite element model of the slopeplatform thrust bearing with different dip angle parameters.The results show that within the rotor speed range studied,the highest film temperature and the temperature of the bearing center area of the tile decrease first and then increase as dip angle of the tile increases.There is an optimal dip angle of the tile,which makes the maximum oil film temperature and bearing center temperature of the bearing reach the minimum within the working speed range,and it helps to reduce the possibility of bearing tile burning.