The control effects of Folicur and Caramba of different concentrations against wheat powdery mildew were tested by greenhouse and field.The result of seedling test showed that Folicur (1.15 mL/L),Caramba (3.75 mL/L) had better protection.They could inhibite the fungi growth in the diseased wheat leaves.The result of field test showed that the control effect of Folicur and Caramba were 86.57% and 82.09% and higher than that of triadimefon (68.16) when spraying fungicide before the powdery mildew occurred.The control effects were still over 68% and higher than that of triadmefon when spraying fungicide after the disease happened.