An endoscope 2 having a CCD20 disposed at the distal end of the insertion portion 21 and the insertion portion 21 is inserted into the body of a subject, a light source device 3 to be illuminated by the illumination light in the body of the subject, the endoscope The endoscope system equipped with a processor 4 with a mirror image processing apparatus 7, the processing condition storage unit 12 which stores processing conditions of the endoscopic image, the processor 4, the process of selecting the processing conditions condition selection unit 13, in addition to the reference axis of the six color space of the endoscopic image, the color correction process is to set the reference axis of the at least two, based on the processing conditions processing condition selection unit 13 selects endoscope system 1 comprises a, an image processing means for performing.被検体の体内に挿入される挿入部21、および挿入部21の先端部に配設されたCCD20を有する内視鏡2と、被検体の体内を照明光により照明する光源装置3と、内視鏡画像処理装置7を有するプロセッサ4と、を具備した内視鏡システムであって、プロセッサ4が、内視鏡画像の処理条件を記憶する処理条件記憶部12と、前記処理条件を選択する処理条件選択部13と、内視鏡画像の色空間上の6本の基準軸に加えて、処理条件選択部13が選択する処理条件に基づいた少なくとも2本の基準軸を設定し前記色補正処理を行う画像処理手段と、を具備した内視鏡システム1。