Aiming at 3D mesh data model of Terracotta Warrior blocks, a block fracture surface matching algorithm based on feature contour is proposed in the paper. Firstly, the data model is pretreated, such as texture map, data denoising, hole filling, data model simplification and so on. Secondly, the primary contour and secondary contour are extracted, and then the feature contour is extracted too. Lastly, the feature contour is segmented according to the corner point in order to match the feature contour by the longest common subsequence method, then the contour feature matching is completed, and the fracture surface matching is achieved. The experimental results show that the algorithm proposed in the paper is an effective and accurate Terracotta Warrior blocks matching method.