In order to study the variation trends and influencing factors of the grinding temperature of the narrow and deep groove structure components, AISI 1045 steel bars had been prepared to specimens as a designed shape, and a single layer electroplated cubic boron nitride (CBN) wheel was employed to grinding the narrow-deep in the conditions of high-speed and creep feed. In the grinding process, the temperature was detected by a thermocouple. And the temperature distribution data was collected by thermocouple; The various trends of the grinding temperature during the grinding process and the influence of the cutting speed, the feed rate of the workpiece, the depth of cut on the bottom of the narrow groove, the rounded position and the side of the groove were analyzed. The result shows that the temperature rises in the narrow deep groove grinding zone is mainly due to the increasing of the plastic deformation work of the material, and the grinding temperature fluctuates due to the sudden change of the plastic deformation work; the grinding temperature in the slow feed grinding decreases with the increasing of the wire speed of the grinding wheel and increases with the increasing of the feed speed and the depth of the workpiece. And the feed speed of the workpiece plays a major role in the grinding temperature. The influence of the grinding depth is the second, and the influence of the grinding wheel speed is the smallest.