The invention provides a multi-beam landform partitioning method based on statistics of node information content. The method mainly comprises that landform information is scattered in eight directions and quantified; and a variance of an information content mean sequence of each sub landform block after partitioning is used to define advantages and disadvantages of partitioning, and the number of sub-block boundary nodes under optimal partitioning is obtained by taking variance maximizing as an optimum evaluation standard. According to the invention, area of more landform information content can be separated effectively from areas of less landform information content under the obtained partitioned landform, the landform partitioning method can be used to compressed storage of landform data, the blocks with abundant landform information stores more node information, the blocks with fewer landform information stores relatively low node number, the method can be also applied to path programming of landform matched navigation, an aircraft passes the block areas of large landform information content and the like, and the matching precision and reliability can be improved.