The invention relates to a device which can order and play program in network TV, wherein said device is formed by program list maintain module, memory module, display module, inquire module and processing module; said program list maintain module is used to receive the distribution of processing module; the memory module is used to store program list, receive the distribution of processing module and receive the inquire of inquire module; the display module is used to receive the distribution of processing module and distributes the information of memory module; the inquire module is used to inquire the program list information of memory module and receive the distribution of processing module; the processing module is used to receive the message transmitted from the inquire module, and distribute the program list information of memory module. The invention also discloses a relative system and a relative method. The invention can be used to order kinds of programs in IPTV system, to realize the intelligenization of start condition. |