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Chrysoviruses are isometric virus particles (35–50 nm in diameter) with a genome composed of double-stranded RNAs (dsRNA). These viruses belonged to the <i>Chrysoviridae</i> family, named after the first member isolated from <i>Penicillium chrysogenum</i>. Phylogenetic classification has divided the chrysoviruses into <i>Alphachrysovirus</i> and <i>Betachrysovirus</i> genera. Currently, these chrysoviruses have been found to infect many fungi, including <i>Fusarium</i> species, and cause changes in the phenotype and decline in the pathogenicity of the host. Thus, it is a microbial resource with great biocontrol potential against <i>Fusarium</i> species, causing destructive plant diseases and substantial economic losses. This review provides a comprehensive overview of three chrysovirus isolates (Fusarium graminearum virus 2 (FgV2), Fusarium graminearum virus-ch9 (FgV-ch9), and Fusarium oxysporum f. sp. dianthi mycovirus 1 (FodV1)) reported to decline the pathogenicity of <i>Fusarium</i> hosts. It also summarizes the recent studies on host response regulation, host RNA interference, and chrysovirus transmission. The information provided in the review will be a reference for analyzing the interaction of <i>Fusarium</i> species with chrysovirus and proposing opportunities for research on the biocontrol of <i>Fusarium</i> diseases. Finally, we present reasons for conducting further studies on exploring the interaction between chrysoviruses and <i>Fusarium</i> and improving the accumulation and transmission efficiency of these chrysoviruses.