The present invention relates to a catheter which is inserted into an artery of an arm that includes a pressure sensor for blood pressure measurement and prevents abdominal bleeding, and more specifically, an abdominal bleeding that is inserted into an artery of an arm that includes a pressure sensor for blood pressure measurement, and more specifically, As a catheter to prevent, blood pressure measuring unit for measuring the blood pressure of the blood present in the surgical site where blood flows from the heart； An elongated, flexible tube, comprising a catheter body inserted into the artery of the arm to prevent abdominal bleeding； And an aortic obstruction balloon (AOB) attached to the distal end of the catheter body and inflated for obstruction at the position of the descending aorta to prevent abdominal bleeding. According to the catheter inserted into the artery of the arm including the pressure sensor for measuring blood pressure proposed in the present invention and the method for preventing abdominal bleeding, the blood pressure measuring unit located on the opposite side of the tip of the catheter body with the aortic obstruction balloon attached Constituting the catheter provided, the catheter body of the catheter is inserted into the artery of the arm along the same direction as the blood flow direction, and then the aortic obstruction balloon expands at the position of the descending aorta to block the aorta, and blood from the heart through the blood pressure measurement unit By allowing the blood pressure to be measured directly at the flowing surgical site, it reduces the time required to block the arteries and reduces the additional vascular damage to the patient compared to the method of blocking the arteries by surgery, as well as the blood flow direction. As it is inserted in the direction, the aortic obstruction balloon can be effectively prevented from falling off, and blood pressure measurement and monitoring of the surgical site of the clo
