Abstract: The fungitoxicity of six fungicides registered in control of tomato gray mold and seven fungicides unregistered to Botrytis cinerea were determined. The result showed that 25% SYP-2048 EC had the highest inhibition rates in the six registered fungicides， of which the EC50 value was 0.14 mg·L-1; 25% prochloraz EC had the highest inhibition rates in the five unregistered fungicides （10% polyoxin B included）， of which the EC50 value was 0.66 mg·L-1. In microbial fungicides，the inhibition rate of Trichoderma viride WP （2×108 cfu·g-1），of which the EC50 value was 0.001×108 cfu·L-1， higher than Bacillus subtilis AS（8×109cfu·mL-1）.

Key words: chemical fungicides, biofungicides, tomato gray mold, Botrytis cinerea, fungitoxicity