The present invention relates to communication technology, and in particular, to a method, apparatus and system for supporting distributed IMS charging. The system for supporting distributed IMS charging, comprises: a plurality of nodes, and a index server (101) interconnecting the plurality of nodes, in a network; wherein, a first node (102) sends a charging request to the index server (101), the index server (101) routes the charging request to a second node (103) adapted to charge based on the charging request or returns an address of the second node (103) to the first node (102) and then the first (102) node sends the charging request to the second node (103) with the address from the index server (101); and the second node (103) charges based on the charging request. This invention enables an operator to manage the subscriber's charging location information for distributed charging services in a centralized index server, instead of provisioning the charging locations in each separated IMS charging system. This invention greatly saves the operator's management cost of charging.