Lightweight gypsum mortar with high coating rate

The invention belongs to the technical field of building materials, and particularly discloses light gypsum mortar with a high coating rate. According to the lightweight gypsum mortar provided by the invention, on the basis of the components of the existing gypsum mortar, the mineral wool or asbestos is added, so that the lightweight gypsum mortar has the excellent performance characteristics of high coating rate and high strength. The mineral wool or asbestos and the lightweight aggregate are compounded and added, so that the spreading rate is greatly improved, the strength of the product meets the national standard, and the technical problem that the strength of the product is greatly reduced under the condition that the spreading rate of the lightweight gypsum mortar is remarkably increased is solved. Besides, the mineral wool or the asbestos is also used as an anti-sagging agent, so that the anti-sagging performance of the light gypsum mortar is greatly improved, and the excellent performance characterist