Abstract: In order to explore the properties of domestic plantation teak and its possibility of replacing rare natural teak as the material of floor and furniture, this paper compared plantation teak with traditional Myanmar natural teak, and analyzed the differences of macroscopic structural characteristics of the two through sample preparation. According to the corresponding national standards, the difference of chemical components（cellulose, hemicellulose, acid insoluble lignin） and physical properties（dry shrinkage, wet expansion, density, bending strength and flexural modulus） of two teak trees were analyzed. Two types of teak were used to manufacture corresponding solid wood floor heating products, and the appearance and stability of the products were compared. The experimental results showed that:（1） in terms of macroscopic characteristics, they were similar, but there were some differences in the distribution of tube holes, odor and touch.（2） In terms of chemical composition, the main difference between the two kinds of teak was the content of hemicellulose. The average content of hemicellulose in plantation forest teak and Myanmar natural forest teak was 20.94% and 23.10% respectively, with a difference of 2.16%, and the difference of other components was less than 0.50%.（3） In terms of physical and mechanical properties, there were significant differences between the two types of teak. The dimensional stability and bending strength of Myanmar natural forest teak were better than those of plantation forest teak. Radial air dry shrinkage, tangential air dry shrinkage, radial air dry wet expansion and tangential air dry wet expansion of the former were 0.62%, 1.01%, 1.28% and 2.06% respectively, those of the latter were 0.84%, 2.42%, 1.61% and 3.21% respectively. The flexural strength and modulus of elasticity of the former were 100 MPa and 12 360 MPa respectively, those of the latter were 73.2 MPa and 9 030 MPa respectively. However, the performance of plantation teak can still meet the needs of furniture, floor and other materials.（4） Two kinds of SWFG were investigated, the appearance of plantation teak SWFG was similar to nature teak SWFG, and dry shrinkage of length, wet expansion of length, dry shrinkage of width and wet expansion of width of plantation teak floor can reach 0.04%, 0.01%, 0.18% and 0.08% respectively, it met the requirements of national standards. Research showed that the domestic plantation teak can be used to process SWFG, and as furniture and floor materials to replace the natural forest teak.