Abstract: Absttact: In this experiment, the tissue was isolated from the Malabar spinach disease, were purified identification of pathogen parasitic Phytophthora (Phytophthora parasitica Dastur).Test using seven kinds of bactericides containing toxic medium growth rate method was used to determine the inhibition effect of parasitic phytophthora, the results showed that the drug after 48 h, chlorothalonil EC50 values of 13.60 mg/L, virulence index is larger, the parasitic disease mould inhibition effect is very significant;Evil frost manganese zinc and mancozeb EC50 values of 16.99 and 28.62 mg/L, inhibition effect is significant;Frost armor manganese zinc, downy mildews and dimethomorph EC50 values respectively is 56.23 mg/L, 56.23 mg/L and 60.71 mg/L, effect in general;Dichloride, the EC50 of cyanide from a value of 319.21 mg/L, toxicity effect is poorer;24 h after drug agents on inhibition of parasitic phytophthora effect similar to 48 h after drug inhibition effect.