A solid-state imaging device and an endoscope device can correct characteristics of a digital signal output from an AD conversion unit with respect to a pixel signal input to an AD conversion unit with higher precision even when a dynamic range of a pixel signal is changed. A correction unit corrects the digital signal output from the AD conversion unit based on a correction function using the digital signal output from the AD conversion as a variable so as to correct the characteristics of the digital signal output from the AD conversion unit with respect to the pixel signal input to the AD conversion unit. A correction method changing unit changes an order of a variable between first and other orders in the correction function according to a change in a dynamic range of the pixel signal.
