This paper discusses strain localization in triaxial woven CFRP under a tensile loading. Numerical result calculated by periodic unit cell simulation is compared with experimental result evaluated using digital image correlation (DIC) technique. In the numerical simulation, a straight-type fiber bundle composite is first modeled and is cut into appropriate shape to compose the unit cell. A contact analysis is then executed to make woven and the contacted area is attached each other following cohesive behavior. Uniaxial global tensile strain is applied to the unit cell at last. For the experiment, black and white random pattern is attached on the surface of triaxial woven CFRP and a full field strain measurement is carried out by DIC method. For the evaluation of full-field displacement and strain, a mesh DIC and shape-function strain calculation are employed, respectively. The strain distribution obtained by this method is hence slightly broader than the actual one but comparable enough to the analytical result. Whereas the analysis is very simple and done by only ABAQUS, the experimental and analytical results show good agreement. It is clarified that intersection point of 30° and -30° fiber bundle has the most significant tensile-directional local strain.