The sensitivity of Rhizoctonia cerealis and Gaeumannomyces grarninsis to propiconazol was determined by measuring the mycelial growth on the fungicide-amended media using 98 isolates of R.cerealis and 88 isolates of G.graminsis from Henan Province.The results indicated that 50% effective concentration (EC50) values ofR.cerealis and G.graminsis to propiconazol ranged from 0.119 3 to 2.581 3,0.001 5 to 0.172 4 μg · mL-1,respectively.The results of the frequency analysis revealed that low sensitivity subcolony to propiconazol had been discovered in R.cerealis and G.graminsis.The mean EC50 values of (0.484.8±0.200 9) and (0.049 3 ±0.029 0) μg · mL-1 for most isolates showed a unimodal curve distribution,which were treated as the sensitivity baseline of R.cerealis and G.graminsis to propiconazol,respectively.The isolates collected from different regions showed different sensitivities.The results provided a theoretical basis for the efficient application of propiconazol in the control of wheat sharp eyespot and take-all in the field of Henan Province.