MA-126 is an entomopathogenic fungus, with a wide host range and high virulence against agricultural pests. MA-126 conidia were collected from solid fermentation on a mass production scale and a WP formulation was prepared. Good biocontrol effects against diamond-back moths, lychee stink bugs and bee mites were demonstrated in field tests. Deposit of standard stock isolated in the designated institution, toxicity assay and physical analysis were all well executed to meet the regulations of technology transfer and commercial product registration.