This study aims to isolate and identify entomopathogenic fungi and evaluate their virulence against the cabbage aphid, Brevicoryne brassicae L. A weekly survey of pests present on cabbage crop at El Dair region, Qualubia Governorate was carried out during 2014 – 2015 season. The results indicated that, cabbage aphid, B. brassicae, was moderate collected. The susceptibility of cabbage aphid B. brassicae, for two entomopathogenic fungi, i. e., Beauveria bassiana and Metarhizium anisopliae, were investigated. Where, B. bassiana gave higher levels of mortality against adults of cabbage aphid with low lethal time (LT₅₀). The mortality percents of both entomopathogenic fungi were increased with increasing the period after treatment.