The invention relates to the communication processing field, and especially relates to a method and system automatically caching network requested returning data; the method comprises the following steps: distributing a request label corresponding to a network interface; obtaining network request returning data corresponding to the request label, and gaining the original data; converting the original data into a standard format defined by the cache mechanism, thus obtaining the standard data; parsing the standard data so as to obtain the network requested returning data; creating a cache data sheet corresponding to the request label, wherein the cache data sheet comprises a first number and the returning data. The method and system can automatically create the cache sheet according to the structure of the returning data, thus caching the network requested returning data.