An image processing device for an endoscope includes an image processing section which performs signal processing for generating an image signal to be observed as an endoscope image, for a signal picked up with an image pickup device equipped in the endoscope, a tone correcting circuit section which corrects a tone for the image signal, and a switching section which switches an observation mode or a type for observing as an endoscope image, and changes a correction characteristic of a tone by the tone correcting circuit section in accordance with switching of the observation mode or the type.
