Vehicle blind spot monitoring system and vehicle using the same

A blind spot monitoring system for a vehicle includes an alarming module, an obstacle detector, a controlling module, and a regulating module. The obstacle detector is configured to detect whether an obstacle comes into a detection field of the obstacle detector when the vehicle makes a turn, and output a detecting signal when it is determined by the obstacle detector that the obstacle comes into the detection field. The controlling module is configured to activate the alarming module to issue an alarm when the controlling module receives the detecting signal. The regulating module is configured to detect a turning angle of the vehicle, and to regulate the detection field of the obstacle detector according to the turning angle, allowing the detection field to at least encompass a field of inner wheel difference of the vehicle.