Parking braking prompting device

The utility model discloses a parking braking prompting device which comprises a central processing unit, a displacement sensor, a vehicle speed sensor, an alarming device and a timer. The displacement sensor is integrated inside a parking brake, the displacement sensor is connected with the central processing unit, and the central processing unit is also connected with the vehicle speed sensor, the alarming device and the timer. The parking braking prompting device can detect whether the parking brake is started or not when a car is in a stopping state. If the parking brake is not started, the parking braking prompting device can prompt a driver that the parking brake is not stared, and therefore dangerous accidents caused by sloping after the car is parked are avoided. The parking braking prompting device is simple in structure and strong in practical applicability.