Inorganic external wall exterior insulation mortar dry material

The invention discloses an inorganic external wall exterior insulation mortar dry material which comprises the following components in parts by weight: 120 to 150 parts of vitrified microbead, 180 to 250 parts of ordinary Portland cement, 70 to 120 parts of coal ash, 0.3 to 0.8 part of polypropylene fibers, 1 to 3 parts of wood fibers, 10 to 30 parts of inorganic ceramic fibers, 1 to 2 parts of hydroxypropyl methyl cellulose with the viscosity of 0.18-0.24 million, 5 to 10 parts of redispersible emulsion powder, 0.3 to 0.5 part of organic silicon hydrophober, 0.3 to 0.5 part of starch ether, 0.3 to 0.5 part of calcium formate, 0.5 to 1 part of polycarboxylate superplasticizer, 0.01 to 0.02 part of lauryl sodium sulfate and 0.3 to 0.8 part of polyvinyl alcohol 2488.