An address list system, comprising multiple data input terminals and multiple inquiry terminals, each of the data input terminals is a computer and each of the inquiry terminals is a device having the function of a telephone, each of the data input terminals comprising: a first input unit for inputting address list information to a first data processing unit; a first data processing unit for receiving the address list information inputted by the input unit and performing format conversion so as to form at least one data file having a uniform data format, said data file of a uniform data format containing at least one piece of a record; a first storage unit for storing data generated by the first data processing unit; and a transmission unit for establishing a connection with some of the inquiry terminals and unidirectionally transmitting the data file of a uniform data format to the some of the inquiry terminals respectively, the data file containing: record information and node information including a first relation identifier of a node or record pointing to a respective parent node; and a second relation identifier of the data file pointing to its parent node at the inquiry terminals; wherein data items of each record consist of uniform data items and individualized data items; wherein each of the inquiry terminals comprises: a receiving unit for establishing a connection with some of the data input terminals and receiving respective data file of a uniform data format transmitted from each of the some of data input terminals; a second storage unit for storing the data file of a uniform data format received by the receiving unit; a second data processing unit for operating and controlling the data file of a uniform data format; and an inquiry unit for: performing local inquiry on the address list information in the second storage unit and locating a node position where the imported data file is to be inserted by the each of the inquiry terminals, establishing a new node if necessary, then locating the node position for insertion; establishing a relationship between the imported data file and its parent node, and writing a relation identifier indicating the relationship into corresponding data files of a uniform data format; wherein the address list information at the inquiry terminal displays organization architecture of the respective data in a treelike structure, and and wherein the communication between the inquiry terminals and the data input terminals is unidirectional from the data input terminals to the inquiry terminals, and multiple different data files of uniform data format generated in some or all of the multiple input terminals are adapted to be transmitted to the same inquiry terminal, and the same data file of uniform data format generated in the same input terminal is adapted to be transmitted to some or all of the multiple inquiry terminals. a first input unit for inputting address list information to a first data processing unit; a first data processing unit for receiving the address list information inputted by the input unit and performing format conversion so as to form at least one data file having a uniform data format, said data file of a uniform data format containing at least one piece of a record; a first storage unit for storing data generated by the first data processing unit; and a transmission unit for establishing a connection with some of the inquiry terminals and unidirectionally transmitting the data file of a uniform data format to the some of the inquiry terminals respectively, the data file containing: record information and node information including a first relation identifier of a node or record pointing to a respective parent node; and a second relation identifier of the data file pointing to its parent node at the inquiry terminals; record information and node information including a first relation identifier of a node or record pointing to a respective parent node; and a second relation identifier of the data file pointing to its parent node at the inquiry terminals; wherein data items of each record consist of uniform data items and individualized data items; a receiving unit for establishing a connection with some of the data input terminals and receiving respective data file of a uniform data format transmitted from each of the some of data input terminals; a second storage unit for storing the data file of a uniform data format received by the receiving unit; a second data processing unit for operating and controlling the data file of a uniform data format; and an inquiry unit for: performing local inquiry on the address list information in the second storage unit and locating a node position where the imported data file is to be inserted by the each of the inquiry terminals, establishing a new node if necessary, then locating the node position for insertion; establishing a relationship between the imported data file and its parent node, and writing a relation identifier indicating the relationship into corresponding data files of a uniform data format; performing local inquiry on the address list information in the second storage unit and locating a node position where the imported data file is to be inserted by the each of the inquiry terminals, establishing a new node if necessary, then locating the node position for insertion; establishing a relationship between the imported data file and its parent node, and writing a relation identifier indicating the relationship into corresponding data files of a uniform data format;