Abstract: In order to simplify the process of distribution network planning, the planning pattern of distribution network is defined, and a distribution network planning method is proposed based on pattern. According to the uncertain factors in the process of distribution network planning, the method and idea of fuzzy theory are introduced. Firstly, fuzzy clustering method is used to classify the existing planning samples to form several kinds of different planning patterns. Then the fuzzy pattern recognition method is adopted to identify the planning target and find its planning pattern. In addition, the planning target can be planned according to its planning pattern. In the end, the feasibility of the method is verified by the actual data, and the result shows that the planning method based on pattern can simplify the planning process of distribution network effectively.