A scanning endoscope system includes: a scanning endoscope including a light-guiding section that guides illumination light, a driving section that causes the light-guiding section to swing such that an irradiation position of the illumination light draws a trajectory corresponding to a predetermined scanning pattern and a light-receiving section that receives return light of the illumination light a test chart device including a plane portion having a first region and a second region, the first region being provided at a peripheral portion of the plane portion, the second region being provided at a center portion of the plane portion a light detection section that outputs a signal corresponding to an intensity of the return light a pixel generation section that generates pixels on the predetermined scanning pattern a first correction value calculation section that calculates a correction value for color balance adjustment based on a pixel value of each of the pixels included in the first region and a second correction value calculation section that calculates a correction value for pixel shift correction based on a pixel position of each of the pixels included in the second region.
