As a kind of biomaterial, the use of rattan has very important function in replacing wood?partly and protecting forest resources. In order to improve the levels of high value-added processing and utilizing for Chinese rattan resources, Daemonorops margaritae and Calamus simplicifolius were chosen as experimental materials and the main physical and mechanical properties were studied before and after the modification. The results show that after being modified, all the physical & mechanics properties such as MOE, MOR, compression modulus & strength, density, shrinkage, swelling of sorption, degree of homogeneity are significantly improved than untreated rattans.