Lan Guan sand-free self-leveling mortar is a basic ground backfill material. Its products are refined from special gypsum, fine powder and foreign brand polymer spray dry powder resin and other additive raw materials, and wood fiber is added to the formula to effectively increase the cracking resistance of mortar ground, and the strength reaches more than 15MPa. With high fluidity, high plasticity, suitable for home decoration wood flooring leveling, floor heating backfill, concrete backfill and other thickness of the foundation construction.