An in-vivo monitoring camera system that includes: a camera support tube (13) of which one end part is introduced into a body； a camera unit (11) which joins with the camera support tube in the body； a joining portion which joins the camera unit and the support tube to each other； a camera side cable (12) which is connected to the camera unit, and is drawn out toward the outside of the body through the camera support tube； a control system which is on the outside of the body, is connected to the camera side cable, and includes at least a display apparatus； and a cooling system (77) which cools the camera support tube to which heat of the imaging unit is transferred.
