The invention provides a network intelligent door and a system thereof. The network intelligent door comprises an audio/video collection and playing module which is used for collecting images and environment sounds in real time through a camera and stores the images and environment sounds in an exchange area for sending and playing; a master control module which is used for receiving and performing a control command of the network intelligent door; a network transmission module which is used for sending audio/video data obtained from the exchange area to a client in network connection with the network transmission module, transmitting a command of the client and audio data of an interphone to the local machine, setting the system and playing the audio/video data; a man-machine interaction which is used for realizing real-time preview, file playing management and system setting; an alarm module which is used for realizing wireless alarm; and a remote unlocking module. According to the door and the system, a household door body and the intelligent control system are perfectly integrated, the stability and reliability of the network intelligent door are ensured, and various different pieces of information can be displayed by a local liquid crystal display through a TFT-to-LVDS module.