1. An object information acquisition apparatus, comprising: a receiver configured to receive an acoustic wave from an object and convert the received acoustic wave into an electric signal; a moving control unit configured to move the receiver at least in a first direction and a second direction which is a direction perpendicular to the first direction; a characteristic information acquisition unit configured to acquire, using the electric signal, characteristic information on the object; and a display control unit configured to: receive specified region information associated with a specified region defined by a user, produce, using the specified region information, guide information in terms of a number of times the receiver is moved in the first direction for acquiring the characteristic information on the object in the specified region, and cause a display unit to display a guide based on the guide information, wherein the information acquisition unit is configured to acquire, using the electric signal, the characteristic information on the object in the specified region.