This work aimed to study the effects of different color treatments on the relative free radicals concentration of boiling dyeing flake surface, and the effects of different camouflage color combinations on the mechanical properties of the board. During the boiling dyeing of flakes, the relative free radicals of flakes which were differently treated were detected by the electron spin resonance spectrometer. Then different plates were pressed by different camouflage color schemes. Their mechanical properties were detected by universal mechanical electronic experiment instrument. And the relationship between the relative free radicals concentration and the mechanical properties of different Camouflage Particle boards was analyzed in this paper. The F value of variance of different treatments (boiled or not, dyed or not, the type of dye, the concentration of dye, etc.) was 119.4. The MOR variance of the mechanical properties of five different Camouflage Particle boards was 9.38. Jungle camouflage plates had the best mechanical properties, with parameters of MOE(5883.47 MPa), IB(0.68 MPa), MOR(52.37 MPa). Different dyeing treatments of acid dyes had significant influence on the relative free radicals concentration, and they were beneficial to the bonding strength of plate. The mechanical properties of plate were also improved by the four common camouflage color schemes. Especially, jungle camouflage plates had relatively good mechanical properties.