An intracorporeal-monitoring camera system provided with a support tube whose one end is introduced in a body, an imaging portion that is joined to the support tube in the body, a joining portion that joins the imaging portion and the support tube together, a cable that is connected with the imaging portion and drawn out to an outside of the body through the support tube, and a control system that is provided on the outside of the body, connected with the cable, and includes at least a display device. A slit is formed in the support tube so that the cable is placed in the support tube from a side of the support tube.