A 
moisture-proof, heatproof, size-stable, deformation-free and anti-
cracking solid wood floor 
processing method provided by the invention relates to the technical field of building materials. By the adoption of a wet-
heat resistant, anti-deformation and anti-
cracking key technology, a 
solid wood floor blank is completely immersed in a container filled with a waterproof 
moisture-proof substance in a 
liquid state of 35-95 DEG C, and simultaneously a pressure of 0.2-1.5Mpa is applied for 24-72 hours so as to make the waterproof 
moisture-proof substance to be permeated into the inside of the 
solid wood floor blank; and after the 
solid wood floor blank is taken out and infiltrated, the 
solid wood floor blank is dried and processed according to specification requirements so as to manufacture the moisture-proof, heatproof, size-stable, deformation-free and anti-
cracking solid wood floor product. The waterproof moisture-proof substance comprises, by weight, 0-100% of 
wax and 0-100% of dry 
plant oil, is used in wet-
heat resistant, anti-deformation and anti-cracking 
processing of wood floor, and can be used to make solid wood floor moisture-proof, heatproof, size-stable, deformation-free, anti-cracking and durable.