An endoscope system comprising: an image pickup apparatus including an image pickup device which picks up an image of an object and a processor connected to the image pickup apparatus, wherein the image pickup apparatus includes: an image pickup device control section which controls the image pickup device, a storage section which stores first image pickup device control information to be set in the image pickup device control section, an image pickup device control information setting section which sets the first image pickup device control information stored in the storage section in the image pickup device control section, an abnormality sensing section which senses an abnormality in the image pickup device control section, an image pickup device control information resetting section which reads out the first image pickup device control information from the storage section and controls the image pickup device control information setting section to reset the first image pickup device control information in the image pickup device control section when an abnormality is sensed by the abnormality sensing section, a reset occurrence information storage section which stores reset occurrence information upon occurrence of the reset by the image pickup device control information resetting section, and a first communication section which transmits and receives information to and from the processor, and the processor includes: a second communication section which transmits and receives information to and from the image pickup apparatus, characterized in that the processor further includes: an image pickup device control information retransmission section which reads out the reset occurrence information from the reset occurrence information storage section through the second communication section and the first communication section and, when reset is detected, transmits second image pickup device control information held by the processor to the image pickup apparatus through the second communication section and the first communication section. an image pickup apparatus including an image pickup device which picks up an image of an object and a processor connected to the image pickup apparatus, wherein the image pickup apparatus includes: an image pickup device control section which controls the image pickup device, a storage section which stores first image pickup device control information to be set in the image pickup device control section, an image pickup device control information setting section which sets the first image pickup device control information stored in the storage section in the image pickup device control section, an abnormality sensing section which senses an abnormality in the image pickup device control section, an image pickup device control information resetting section which reads out the first image pickup device control information from the storage section and controls the image pickup device control information setting section to reset the first image pickup device control information in the image pickup device control section when an abnormality is sensed by the abnormality sensing section, a reset occurrence information storage section which stores reset occurrence information upon occurrence of the reset by the image pickup device control information resetting section, and a first communication section which transmits and receives information to and from the processor, and the processor includes: an image pickup device control section which controls the image pickup device, a storage section which stores first image pickup device control information to be set in the image pickup device control section, an image pickup device control information setting section which sets the first image pickup device control information stored in the storage section in the image pickup device control section, an abnormality sensing section which senses an abnormality in the image pickup device control section, an image pickup device control information resetting section which reads out the first image pickup device control information from the storage section and controls the image pickup device control information setting section to reset the first image pickup device control information in the image pickup device control section when an abnormality is sensed by the abnormality sensing section, a reset occurrence information storage section which stores reset occurrence information upon occurrence of the reset by the image pickup device control information resetting section, and a first communication section which transmits and receives information to and from the processor, and the processor includes: a second communication section which transmits and receives information to and from the image pickup apparatus, characterized in that the processor further includes: an image pickup device control information retransmission section which reads out the reset occurrence information from the reset occurrence information storage section through the second communication section and the first communication section and, when reset is detected, transmits second image pickup device control information held by the processor to the image pickup apparatus through the second communication section and the first communication section.