The invention provides a Metarhizium flavoviride MFYY090714 and applications thereof. The Metarhizium flavoviride MFYY090714 is preserved in China General Microbiological Culture Collection Center on April 8th, 2014. The preservation number is CGMCC No.9020. The bacterium strain is a novel bacterium strain separated from the body of sogatella furcifera. The culture is simple, the growth is rapid, the spore yield is high, and the germination rate of the spores is high. The pathogenicity of the Metarhizium flavoviride spore suspension liquid on sogatella furcifera is high, moreover, the Metarhizium flavoviride spore suspension liquid is environment-friendly and pollution-free, does not generate any drug resistance, and can be widely used to control sogatella furcifera in practice.