In order to screen friendly and high - efficient fungicides to Phytophthora capsici, the inhibition of Eugenol soluble solution and Metalaxyl · propamocarb WP to the mycelium growth of Phytophthora capsici was tested in the laboratory. The toxicity test showed that the EC50 values of 3 g/kg Eugenol and 25% Metalaxyl · propamocarb to Phytophthora capsici were O. 0851 and 23.8451 μg/mL, respectively.