A medical image processing apparatus includes a control unit configured to cause, based on a detection result of at least one trocar into which a medical instrument is inserted, the at least one trocar being configured to detect a first state and a second state, the first state and the second state indicating an insertion state of the medical instrument into a subject, a display device to display at least one of a first image generated by capturing an image of an observation object inside the subject and a second image of the observation object inside the subject, the second image being previously acquired.