Content charging-based flow adaptation method and system

The present invention relates to a have content-based billing method and system for adapting traffic, wherein the method comprises: Step 1, according to the information pending divalent M / T business phone bill, obtains the corresponding M, T value, according to the M, T value of the M / T business phone bills rating; step 2, the flow rate is determined based on the information in the CDR M / T according to whether the service if a single M / T mode billing meter fee business, if it is, the cost of the user's traffic relief. The present invention is implemented based on 3G content M, T as the charging unit of account, and thus to perform rating and preferential treatment based on a single conversation. At the same time, it can be carried out according to the service code SID bill in traffic on M / T class traffic fee waivers to allow for different application types of data belonging to charge different rates / rating, solve the problem of double billing.