To provide a system for simplifying a prescription of individual medicine and injection drug, and simply and systematically inputting and processing unified wrapper of some medicine, nurse management and complicated infusion by introducing a means for grouping medicine and injection drug by each usage to handle them.

In this medical prescription creating system, a medical prescription is input/created using an electronic means. The system includes: a used material classifying and recording means for previously classifying and recording used material like a tree; a tree display means for displaying the contents recorded in the used material classifying and recording means in a tree structure; a select means for selecting a necessary used material from the tree display means; and a material for use input means for inputting the material selected by the select means.