Abstract: Chilli viral disease happeness and its control were investigated by cultivated field with cover. or cultivated field with no cover. By applying 4 species of antiviral agent control chilli viral disease, the control result of 50% Yiduo suspoemulsion was more effective than NS83 or Virus A and also could promote plant growth. The potency of control of 50% Yiduo suspoemulsion reached 73.4%.