Spring embedding is widely used to draw up networks. However, the readability of network diagrams drawn by using spring embedding is still not good enough. This paper proposes the use of “anchored maps,” in which some of the nodes are fixed as anchors to improve the readability of network diagrams. First, the readability of network diagrams is discussed and the anchored maps are proposed. Then, an overview of the method the author developed for drawing anchored maps is explained. Next, examples of network diagrams that were created from a real sales database are used to prove the effectiveness of anchored maps.