Crystal tiling technology is a good way to solve the problem of nonlinear crystal aperture limit in the process of optical parametric chirped pulse amplification (OPCPA), which can improve the output ability of the amplifier effectively. To solve the problem of precise control of the phase matching angle and the crystal machining error compensation in crystals tiling, a OPCPA crystal tiling method composing of the adjustsment independent and the error compensation is proposed. A 2×2 array crystal tiling adjustment structure and a 2×2 active array mirrors are designed. Each sub-crystal can be rotated three degrees of freedom to achieve the purposes of initial adjustment tiling angle and phase matching. 2×2 active array mirrors which are driven by nanometer accuracy piezoelectric actuators are used to compensate the cutting error of the tiling crystals. An experiment is conducted to test the feasibility and stability of the crystal tiling system using transmission elements and get good results. The result indicates that the crystal tiling technology is practical.