The residual status of pesticides after use can be broadly divided into two categories: the first category is attached to the surface of the crop, mainly fat-soluble, that is, like grease attached to the surface, not easily washed away by water. The second category is permeable, that is, this pesticide will be absorbed into the crop through the crop’s epidermis, rootstock and leaves. More than 70 kinds of pesticides were sprayed onto the surface of grapes and picked after 21 days, and the pesticide residues were tested on the skin and flesh of grapes. It was found that most of the pesticides had been decomposed and disappeared, and most of those that were not decomposed remained on the skin of grapes, with very trace amounts in the flesh. It is best to eat fruit or peel. Although grape skins and apple skins are considered very nutritious by nutritionists, there is no need to consume pesticides for the sake of this little nutrition, and these nutrients can be consumed normally through other foods. Flour or rice water is the master of removing pesticide residues, environmentally friendly and safe. The starch in rice water or flour has a certain adsorption capacity for pesticides, which can remove some of the pesticides adsorbed on the surface of food. Rice water in accordance with the usual way to be able to obtain rice, the use of flour is also very simple, just a small spoonful into the water, and then put the fruit, vegetables, a simple soak scrub, rinse clean. Rinsing with water, this method is only applicable to those water-soluble pesticides, and those attached to the surface easy to clean pesticides, and like fat-soluble pesticides will not be solved. Soak with water, it is recommended that the longest do not exceed half an hour, because then soak, the effect is not significantly improved, fruits and vegetables in turn to soak bad. Use salt and baking soda to soak, both methods, experts do not recommend, because salt will make fruits and vegetables dehydrated. Baking soda is alkaline and will cause nutritional losses to fruits and vegetables, and the taste is not good.