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China is abundant in natural anhydrite which should be rationally and effectively developed and used.Self-leveling material is characterized by perfect workability such as high fluidity, stability, anti-segregation,anti-bleeding and firm adhesiveness with matrix, therefore the anhydrite-based self-leveling material of floor has been carried out in this research.For this aim, the consistency, setting time, initial fluidity and fluidity after 30mins, bleeding rate of the fresh mortars, and the strength of hardened mortar have been tested.in this research,though the optimal type of activator, characterized by fast and high hardening strength, natural anhydrite building cementitious material has been prepared by adding various activators.The research suggests that the optimal activator is sodium sulfate.By the adding of 2.5% sodium sulfate, superplasticizer (melamine formaldehyde sulfite resin or polycarboxylate ether) can ensure anhydrite based paste of high fluidity, both 30min fluidity toss of the two kinds of superplasticizer being little, less than 5mm.In practical application, the type and dosage of superplasticizer is very important to meeting the requirements of anhydrite self-leveling material.Stabilizer can ensure anhydrite paste of high fluidity as well as workability.With stabilizer, the paste can keep homogeneous and be anti-bleeding.With 0.07%-0.1% stabilizer, bleeding rate of self-leveling anhydrite with MFS can be reduced by over 40%, and the bleeding of self-leveling anhydrite with PCE can also be reduced by over 40% with 0.03%-0.09% stabilizer.With the mixtures of superplasticizer and stabilizer,anhydrite-based self-leveling floor material is produced, whose fluidity can achieve 150mm, compressive strength 25.0MPa and flexural strength 6.71MPa.In general, it can meet the requirements of national standard and have a bright market prospects.