The invention provides an information interaction method and a system, which is suitable for the communication field, the method comprises the following steps: receiving information sending request which is sent by users, judging whether a conversion object which is corresponded with the information sending request is a correct conversion object, if is a correct conversion object, responding the information sending request, sending the information to the conversion object, if not, canceling the information sending operation. In the example of the invention, error ration of information interaction is effectively lowered, and usability and convenience of information interaction are greatly improved through judging whether the conversion object which has information interaction with users isa correct conversion object.