An endoscope system in which an endoscope can be cleaned and sterilized more easily. The endoscope system includes the endoscope including at least a main body unit formed by collecting an electric function portion, an optical function portion, and channels to a part of the main body unit, a signal line which is detachable to the main body unit and which is extended from the electric function portion of the main body unit, and a universal cord unit having a scope connector at an end portion of the universal cord unit in which a light guide extended from the optical function portion is inserted, and an endoscope control device including at least a multi-connector portion to which the scope connector of the universal cord unit is detachably arranged, a signal processing unit which controls the electric function portion of the endoscope, a light source device which controls the optical function portion of the endoscope, a light source control unit, and a power supply unit for lighting-on a lamp.