Provided are a medical imaging system and a medical imaging processing apparatus capable of supporting more accurate and easy positioning of a subject than in a case of performing two-dimensional arrangement support display of the subject.A medical imaging system (10) includes an imaging unit (11) that obtains a medical image or data used for generating the medical image by imaging a subject (Obj), a processor that stores positioning data (35) for specifying arrangement of the subject (Obj) with respect to the imaging unit (11), and a display unit (33) that three-dimensionally displays the arrangement of the subject (Obj) with respect to the imaging unit (11) by using the positioning data (35) in a case where the subject (Obj) is imaged using the imaging unit (11).
