Abstract:  In this paper， elastic parameter test method of composite material mechanics was applied and WDW10 microcomputer control universal testing machines was used to study the characteristics of axial compressive mechanics on the xylem of ramie and the whole stalk. It was shown that the average axial compressive elasticity modulus of the whole stalk of ramie xylem of Zhongzhu No.1 was 241.93 MPa， and the average maximum stiffness was 12.61 MPa， while the average axial compressive elasticity modulus of stalk was 304.85 MPa， and its average maximum stiffness was 12.58 MPa. There was no significant difference in elasticity modulus and compressive strength between the elasticity modulus of xylem and stalk. In the stalk composition， xylem and phloem bond on the surface upon their adhesion strength which can not prevent the phloem slipping from the surface of xylem. In the compressive test， it mostly showed the loadbearing function of xylem.

Key words: ramie, stalk, compression, mechanics