1, diatom mud is a kind of interior wall material diatomite as main raw material, with the elimination of formaldehyde, air purification, humidity control, the release of negative oxygen ions, fire retardant, wall self-cleaning, sterilization and deodorization function . Inorganic cementitious material as the main binder material, the main function of diatom filler material, interior decoration formulated dry powder coating material. Because diatom mud healthy environment, not only a good decoration, but also functional, is an alternative to wallpaper and paint a new generation of interior decoration materials. Diatom mud with a mud properties, water absorption, fire burn, easy to repair, natural health, environmental protection, rich texture patterns and colors suitable for all kinds of interior decoration project uses, easy to contaminated dust. 2, the main raw material of diatom mud is formed after millions of years of fossil diatoms - diatomite, diatom is a way of life in the oceans, lakes algae. Oceans and lakes are algae's hometown, where diatom species and large quantities, is known as the ocean prairie, they create 70% oxygen for the survival of life on Earth, is truly the cradle of life on Earth. Diatom mud taken millions of years ago to live in aquatic pelagic like creatures - diatom deposits from natural substances, mainly composed of opal, rich in a variety of useful minerals, soft texture, light, electron microscopy revealed its particle surface has countless tiny pores, a porosity of 90% or more, the specific surface area of ??up to 65㎡ / g. It is this prominent molecular sieve structure, determine its unique features - has a strong physical adsorption and ion exchange properties, a large area of ??water on the wall, it can absorb a lot of water, indicating strong adsorption and slow sustained release of negative oxygen ions, can effectively decompose formaldehyde, benzene, radon and other harmful carcinogens. Diatoms are a major groups of eukaryotic algae, diatoms are a key feature of diatom cells covered with siliceous (mainly silica) cell walls. Siliceous cell wall textures and shapes, but mostly symmetrical arrangement. This arrangement can be used as a basis for classification and nomenclature. But this is not completely symmetric symmetry, diatom cell walls as the side slightly larger than the other side, so as to fitted together. Fossil remains shows that diatoms originated in the early Jurassic period at the latest. Only the center of diatoms male gamete flagellum, can swim. Diatoms have been an important indicator species for environmental monitoring is often used for water research. Classification into one link, under a central diatom mesh and feather pattern head diatoms. Consumers should pay attention to identify genuine and fake diatom mud, a lot of water with a watering can to the diatom mud wall, really do not suit diatom mud, mud does not flow, touch the walls, the walls dry. And after the fake "diatom mud," the nose of the jet have a pungent odor or odorless. In short, not absorbent, after absorbing little or water to form a flow of mud, dregs, fade, bleaching, color and so on are all fake "diatom mud."