The present invention relates to a body position changing device for colonoscopy, the body position changing device easily changing the body position of a patient during a colonoscopy procedure, continuously pressing the abdomen, and comprising: a body part coupled to the waist of the patient so as to allow the patient to maintain a left lateral decubitus position and a supine position a lower limb part elevating both legs of the patient to the upper side of the body part in the supine position and adjusting the angle thereof so as to allow the patient to maintain a squatting position a connecting part connected to the body part and the lower limb part, and having an angle setting member for adjusting the angle of the lower limb part elevated from the body part by means of the rotation of joints and a pressing part having fastening bars, which are inserted into insertion holes provided at both ends of the body part, and a pressing body for pressing the abdomen of the patient from the fastening bars. Since the legs of the patient are maintained in an elevated state during an endoscopic examination, an endoscope can be operated without disturbance, and since a pressing state of the abdomen can be set in a position in which the legs are elevated when the abdomen needs to be pressed while performing the examination, operation convenience is ensured, an accurate examination is performed, and the persons required for the examination of the large bowel can a reduced.La présente invention concerne un dispositif de changement de la position du corps pour une coloscopie, le dispositif de changement de la position du corps modifiant facilement la position du corps dun patient pendant une procédure de coloscopie, exerçant en continu une pression sur labdomen et comprenant : une partie de corps accouplée à la taille du patient de manière à permettre au patient de maintenir une position de décubitus latérale gauche et une position couchée sur le dos une partie de membre inférieur