Abstract: Impacts of eighteen low-toxicity commercial chemical pesticides on conidial germination, mycelial growth and sporulation of Metarhizium anisopliae, an entomopathogenic fungus as biocontrol agent, were tested to evaluate compatibility between the fungus and the pesticides. Results showed that the tested insecticides, plant growth regulators and herbicides were more compatible with the fungus than the tested germicides. Among them, deltamethrin showed the highest compatibility with the fungus. Even at ten times of recommended concentration, it had no inhibition on conidial germination and only inhibited mycelial growth by 25.13% and sporulation by 38.63%. Lambda-cyhalothrin and dimethoate demonstrated moderate compatibility with the fungus. Their inhibition rates on conidial germination were about 30%, but no inhibition on mycelial growth at the recommended concentration. Deltamethrin, acetamiprid, imidacloprid, metalaxyl, trifluralin, abamectin, trichlorphon, chlorpyrifos and bordeaux mixture showed lower compatibility with the fungus, while chlormequa, pyridaben, carbendazim, thiophanate- methyl, mancozeb and triadimefon were hardly compatible with the fungus.