Disclosed are a device and method for fixing and shortening the bowel at the time of endoscopy. The device and method can improve the shortening efficiency of the bowel when compared with the existing endoscope surgery, reduce the inspection time, and mitigate patient inconvenience. Furthermore, an endoscope machine that has been used by an operator can be used, thereby facilitating an operation, and the machine itself need not be separately purchased, thereby obtaining a cost reduction effect. Furthermore, through the application of principles of the device and method, a colonoscopy which is difficult due to the formation of a loop, or retrograde cholangiopancreatography inspection and treatment of a patient having an abnormal anatomical structure due to an operation can be further anticipated.