The invention discloses a luggage cart. The luggage cart comprises a radio frequency device and a pressure sensor, wherein the radio frequency device is adaptive to a corresponding first radio frequency coil; the first radio frequency coil is connected with the radio frequency device in a wireless manner; a time delay circuit is coupled to the radio frequency device; a judgment circuit works and receives an output voltage of a current pressure sensor as a reference voltage; and when the output voltage of the pressure sensor changes, the judgment circuit controls operation of an alarm. Therefore, a user can leave a certain distance away from the luggage cart in a short time at an airport, and at this moment, the luggage cart records the current weight, so that if the weight changes when a luggage or some articles in the luggage are taken away, an alarm is given to protect the luggage; and at the same time, a service center is informed through a communication module, if the luggage cart is moved, an alarm is also given, so that the user can be guaranteed to leave the luggage cart safely for shopping, drinking water, eating foods and the like in a short time.