Many vegetable farmers often do not pay attention to the interval between the use of vegetables before they are put on the market when they use pesticides to control pests and diseases, causing a large amount of pesticide residues on vegetables. The pesticide standards of the Ministry of Agriculture of the People's Republic of China are described below as reference for vegetable farmers. Bactericide: Chlorothalonil wettable powder is used 7 days before going on the market. The safety interval between Propane WP and Thiophanate-methyl wettable powder is 5-7 days. The safety of Rhodamine Mn-Zn wettable powder is safe. The interval is 2 to 3 days. The safety interval for nongrowable narcotics, WP and WP is 4 to 5 days. Insecticides: The safety interval of cypermethrin EC is 2 to 5 days, the safety interval of BLM is 2 days, and the safety interval of CP is 6 days. Laurethin EC, fenpropathrin EC, The safety interval between killing the emulsion and killing the enemy's EC is 3 days. The safety interval between UF, KF, LS, and Doble WP is 7 days. The fenvalerate is The safety interval is 5 days and the safe interval for EC is 9 days. Acaricides: The safety interval for bromodecyl ester EC is 14, and the safety interval for Torque WP is 7 days. China Agricultural Network Editor