The invention provides a fruit and vegetable spraying agent which is prepared from the following components in parts by mass: 50-100 parts of organic silicon emulsion, 0-10 parts of reinforcing packing, 5-20 parts of cross-linking agent and 0.04-2 parts of catalyst. In an atomization coating mode, the fruit and vegetable spraying agent is sprayed onto surfaces of fruits and vegetables, after the spraying agent is dried, a layer of film can be formed, the film is excellent in elasticity as well as aging resistance, high light permeability, breathability and moisture preservation, the growth of fruits and vegetables is not affected, the spraying agent only needs to be sprayed once during the growth period, the application is simple and convenient, the working efficiency is improved, the labor and the materials are saved, and the production cost is lowered.