An inquiry method, comprising: acquiring, by an inquiry search server, a keyword related to an inquiry request for informations after the inquiry search server receives the inquiry request from a source inquiry terminal; determining a given number of other inquiry terminals capable of answering the inquiry request of the user of the source inquiry terminal, as a target inquiry terminal group by matching the keyword with relevant information of the other inquiry terminals, according to the inquiry request, and sending by the inquiry server the inquiry request to each target inquiry terminal in the target inquiry terminal group; sending, by the inquiry search server, answers related to the inquiry request. the source inquiry terminal after the inquiry search server receives the answers from the target inquiry terminals, and wherein the relevant information of the other inquiry terminals, according to the inquiry request, comprises an idle state of the receiving cache of the inquiry terminal, and/or service evaluation points gotten by the target inquiry terminal, and determining a final target inquiry terminal group based on the number of target inquiry terminals required by the source inquiry terminal; when there is no inquiry terminal matching with the keyword or the number of the target inquiry terminals fails to meet the requirement of the source inquiry terminal, adding an inquiry terminal close to a home address or a current location of the user of the source inquiry terminal into the target inquiry terminal group; alternatively, when there is no inquiry terminal matching with the keyword or the number of the target inquiry terminals fails to meet the requirement of the source inquiry terminal, adding the inquiry terminal getting more service evaluation points into the target inquiry terminal group. acquiring, by an inquiry search server, a keyword related to an inquiry request for informations after the inquiry search server receives the inquiry request from a source inquiry terminal; determining a given number of other inquiry terminals capable of answering the inquiry request of the user of the source inquiry terminal, as a target inquiry terminal group by matching the keyword with relevant information of the other inquiry terminals, according to the inquiry request, and sending by the inquiry server the inquiry request to each target inquiry terminal in the target inquiry terminal group; sending, by the inquiry search server, answers related to the inquiry request. the source inquiry terminal after the inquiry search server receives the answers from the target inquiry terminals, and wherein the relevant information of the other inquiry terminals, according to the inquiry request, comprises an idle state of the receiving cache of the inquiry terminal, and/or service evaluation points gotten by the target inquiry terminal, and determining a final target inquiry terminal group based on the number of target inquiry terminals required by the source inquiry terminal; when there is no inquiry terminal matching with the keyword or the number of the target inquiry terminals fails to meet the requirement of the source inquiry terminal, adding an inquiry terminal close to a home address or a current location of the user of the source inquiry terminal into the target inquiry terminal group; alternatively, when there is no inquiry terminal matching with the keyword or the number of the target inquiry terminals fails to meet the requirement of the source inquiry terminal, adding the inquiry terminal getting more service evaluation points into the target inquiry terminal group.