A medical information processing apparatus processes structured document information including a plurality of pieces of partial information obtained by classifying information concerning imaging diagnosis for each predetermined type and relation information indicating a relation between the plurality of pieces of partial information. The medical information processing apparatus includes: a selection unit configured to select partial information and relation information as copy targets from the structured document information which is being displayed; a decision unit configured to decide an arrangement of the partial information in copy information based on the selected partial information and the selected relation information; and a generating unit configured to generate data by converting the selected partial information and the selected relation information based on the decided arrangement.