10. The method as described in claim 6 , further comprising: in response to a determination that the speech recognition request is received from the receiving end: locating, using the IMS, the corresponding text information based on the speech ID.
6. A method, comprising: assigning, using an instant messaging server (IMS), a unique identifier to speech information received from a sending end to serve as a speech ID; sending, using the IMS, the speech information to a receiving end; and in response to a determination that a speech recognition request issued from a user of the receiving end corresponding to the speech information is received: extracting, using the IMS, the speech ID corresponding to the speech information from the speech recognition request; looking up, using the IMS, the speech information; and delivering, using the IMS, a speech recognition command in the speech recognition request and the looked-up speech information to one of a speech recognition module, a speech recognition server, or a speech recognition server cluster; performing, using the one of the speech recognition module, the speech recognition server, or the speech recognition server cluster, speech recognition based on the speech information and the speech recognition command; converting, using the one of the speech recognition module, the speech recognition server, or the speech recognition server cluster, the speech information to obtain text information corresponding to the speech information, wherein the IMS obtains the text information from the one of the speech recognition module, the speech recognition server, or the speech recognition server cluster; sending, using a sending module, the obtained text information back as a speech recognition result to the receiving end, wherein the speech recognition module is set up in the one of the IMS, the speech recognition server, or the speech recognition server cluster; storing, using the IMS, the obtained text information in a cache in correspondence with the speech ID; and in response to a determination that another speech recognition request for the same speech information is received: extracting, using the IMS, a speech ID from the other speech recognition request; and locating, using the IMS, the text information corresponding to the speech ID from the other speech recognition request.