Abstract: A portable device for monitoring vascular access status is disclosed. The portable device comprises a measurement device and a monitoring module. The measurement device senses vibration data induced by blood flow over certain part of a vascular access of a subject via a vibration-sensing module, and sends the sensed data to outside via its communication module. The monitor module controls an electronic device to receive the sensed data and determines a vibration evaluation index corresponding to a status of the part of the vascular access. The portable device for monitoring vascular access status of the present disclosed example has advantages of small size, easy to carry, low cost, and so on, so as to be applicable to home vascular access status monitor.