Abstract: Based on laws of thermodynamics: law of conservation of energy and Fourier law, the theoretical relationship between the structure property and the environment temperature above the surface of the integrated wooden electric heating composites based on carbon fiber paper (CFP) was derived with the solution for one-dimensional heat transfer problem, and then qualitatively analyzed to study the longitudinal scale effect of the front panel of the integrated wooden electric heating composites. The derived relational expression shows an inversely proportional relationship between the structure property and the environment temperature. In order to verify the theoretical calculation results, the temperature tests were conducted on the integrated wooden electric heating composites with 2 mm and 4 mm thickness front panel respectively. The results show that the relationship between the thickness of the front panel and the air temperature above the surface of the composites based on CFP presents inversely proportion based on the mathematical calculation. Compared with the air temperature above the surface of composites with 4 mm thickness front panel, the air temperature of the composites with 2 mm thickness front panel turns out to be higher through experimental validation, which is consistent with the theoretical calculation. Hence, the integrated wooden electric heating composites with thinner front panel have an advantage of utilization of energy.