Inflaming-retarding flexible heat preservation facing material in building and preparing method thereof

The invention discloses an inflaming-retarding flexible heat preservation facing material in building and a preparing method thereof, which is prepared from the following components in part by weight: 1-50 parts of soil particles, 1-50 parts of hollow filler, 1-10 parts of reinforced fibers, 10-50 parts of flexible emulsion, 0-1 part of pigment, 1-10 parts of accessory ingredient and 10-40 parts of water, that are mixed to form slurry with appropriate viscosity, are formed in a template with decorative patterns, so as to prepare a composite material with functions of inflaming retarding, heat preservation and decoration after gradient temperature control, drying and demoulding. According to the invention, the production process is environmental-friendly, the construction process is simple, convenient and feasible, and the inflaming-retarding flexible heat preservation facing material in building is particularly suitable for external facing of high-rise buildings and old town transformation.