One of most popular issues in stereo vision is how to increase the accuracy of the disparity map. On the traditional area-based local methods, selection on the appropriate search window size based on different image features still debate in recently. This study aims to adopt the Gestalt psychology to increase the accuracy of the disparity map by using fuzzy theory. Fuzzy theory has great effects in solving the ambiguity of linguistic. Therefore, we apply Fuzzy theory to explain the Gestalt psychology on the character of the similarity and the proximity. The result indicated that our method successfully combines the fuzzy theory and Gestalt psychology. The proposed method is better than other window-based methods in the repetitive pattern region.