In order to develop environmentally-friendly wood modification methods,water soluble vinyl monomers,2-hydroxyethyl methacrylate（HEMA）and N-methylol acrylamide（NMA）were used as modifiers to treat poplar wood from plantation forests.Effects of addition ratio and concentration of the modifiers on performance of the treated wood were investigated.Results showed that 40.46%of weight percent gain（WPG）,60.77%of anti-volume swelling efficiency（ASE）,20.19%of modulus of rupture（MOR）and 38.00%of modulus of elasticity（MOE）of the treated samples were obtained by optimum treatment processes such as 80∶20 of HEMA/NMA addition ratio and40%of modifiers concentration.Therefore,wood modification could be conducted under lower treatment temperature with less modifier usage,compared to traditional modification methods.