Abstract: On the basis of FD-YC-II Young’s modulus tester，JCD3 microscope is employed to instead JC10

microscope，and then by adding and reducing weight to Vicryl suture at room temperature，the axial elongation is

measured by stretching method. The stress - strain curve，tensile strength 518. 824 MPa，elongation at break

14.087%，yield strength 76.8 MPa，yield strain 1.57% and Young's modulus 81.505 MPa have been measured.

The stress-strain hysteresis loop of Vicryl suture is also obtained.

Key words: stretching method, suture, mechanical property