Abstract: In order to study the physical and chemical properties of potato stalk buds,the compression characteristic parameters on 25 d bud age and the content of cellulose,hemicelluloses and lignin during different bud age period of potato bud were measured by the test,and the interaction correlations between mechanical properties and chemical component of potato buds were analyzed. The results showed that the compression strength and the maximum compressive strain increased from the top to the base of potato stalk buds,the content of cellulose,hemicelluloses and lignin of potato buds increased from the top to the base,and the compression strength and the maximum compressive strain between the top and the base of the bud difference was significant( p < 0.05). The content of hemicelluloses and lignin between the top and the base of the bud difference was significant( p < 0.05).But the compression strength and the content of cellulose,hemicelluloses had a significantly positive correlation of potato bud,and the content of lignin extremely significant positive correlation,the maximum compressive strain and the content of cellulose had a significantly positive correlation of potato bud,and the content of hemicelluloses and lignin extremely significant positive correlation.The study provided experimental data for the further analysis the physical and chemical properties of potato stalk buds.