A testing of tensile property of countersunk composite single-hole and single-lap joint based on the ASTM standard was designed and completed. During the test, the experimental data such as load-displacement curve, surface strain field and displacement outside of upper surface were collected by non-contact field strain measurement system (VIC-3D). The unilateral stretching static implicit and dynamic explicit 3D finite element models of the composite joint are established based on the Abaqus/Standard and Abaqus/Explicit respectively. The test results are verified by the deformation of the lap region. Compared to the test results, when using dynamic explicit algorithm, the error of squeezing stiffness of the joint and the out-ofplane displacement of upper surface are 13.1% and 11.9% separately. While using static implicit algorithm, the error are 14.4% and 20.5% respectively. Therefore, the dynamic explicit algorithm is more accurate, and there is strong reliability on contact modeling, which can be applied to multi-hole joint and some large complex structures modeling for example the integral panel
modeling subsequently.