The invention discloses an intelligent door watching system which comprises a controller, a remote terminal, a camera, a pyroelectric infrared sensor, a pressure sensor and a judgment module. The controller is connected with the camera and the remote terminal. The pyroelectric infrared sensor senses the infrared signal of a thief outside the door. The pressure sensor senses the weight of a thief outside the door. When the pyroelectric infrared sensor and the pressure sensor respond simultaneously, there may be a thief causing harm to the door. At the moment, the controller makes the camera take a picture and transmits the picture to the remote terminal, and the remote terminal pushes alarm information to a user through a push service module to remind the user that the door needs to be monitored. The system can intelligently make preliminary judgment on the situation of the door, does not need 24-hour manual monitoring, and is very convenient.