PROBLEM TO BE SOLVED: To provide a medical image diagnostic apparatus, a medical information providing method, and a medical information providing system capable of reducing the stress felt by a patient during treatment as much as possible while smoothly performing medical procedures.SOLUTION: The medical image diagnostic apparatus comprises: a bed device B on which a patient H lies a gantry G for imaging the internal information of the patient H on the bed device B and a medical information providing unit for providing the patient H, who has entered the treatment room R, with necessary medical information including guidance information using the position of markers arranged inside the treatment room.COPYRIGHT: (C)2016,JPO&INPIT