Abstract: The main methods to control tomato late blight: chemical Manage,biological agents and transgenic prevention.With the increasing popularity of green consumption,more and more attention has been paid to the research of plant origin.This paper reviewed the research status of the tomato late blight disease,the origin and the mechanism of the antibacterial plant. The advance in the research of botanical fungicide antibiotic of tomato late blight along with it's problems and the prospect. It 's plan to provide theoretical basis for research of control biological diseases.