Wax emulsions are water dispersions of PE wax, which are dispersed in water in the form of solid particles. Wax emulsion factory usually distinguish wax emulsions as anionic, nonionic and cationic. The particle size can be processed according to requirements and can be less than 100 nm or greater than 5 microns. Characters of Wax emulsions for coating agent 1, Wax emulsion is non-toxic, does not contain voc, and has no harmful effects on seeds, soil and human body. 2, In the seed coating process, wax particles migrate to the surface of the coating, forming a thin layer of protection, increasing the drying speed of the coating surface and reducing the adhesion and breakage between seeds during the drying film formation process. 3, The hardness, slipperiness and anti-friction properties of the film-forming agent with the addition of wax emulsion are significantly improved, thus improving the wear resistance, fluidity and seed suitability of the seeds. At the same time the brightness and vividness of the coating is also improved. Seed coating agent, with excellent coverage, gloss and striking color, has excellent adhesion, safe for seeds seed growth needs protection and nutrition, will contain protective and nutritional components of the product. Products containing protective and nutritional ingredients must be effective when applied to seeds, without compromising these ingredients and the performance of the seed.