It is an object to provide image processing apparatus and method which can execute a drawing combining instruction and a trimming instruction of illustration/characters or the like on the basis of a disclosure on one sheet in a composite print of a sheet scanning system. When a trimming instruction command is issued, an image process for trimming is executed to a given one of closed areas detected from a drawing instructing area on the sheet. Another image process for a combining process of characters/illustration is executed to the other closed areas.