The invention provides a conversion method for a CWMP (CPE WAN Management Protocol) and a UPnP (Universal Plug and Play) protocol in terminal management. A process of requesting message conversion comprises the following steps of: receiving a request message of the CWMP sent by an automatic configuration server by a home gateway, judging whether a long-distance calling method is used for operating a data model or not, and converting the request message into a configuration management service order or a basic management service order; and packaging the configuration management service order or the basic management service order to be a UPnP protocol message, and sending the UPnP protocol message to UPnP equipment. A process of responding the message conversion comprises the following steps of: after the home gateway receives a response message which is returned back from the UPnP equipment, judging that an error code in the response message is equal to 0 or not; if so, reversely converting the request message; if not, converting error codes of the UPnP protocol and the CWMP; and finally, packaging a reversely-converted order or the error code into a response message of the CWMP, and sending the response message to the automatic configuration server. According to the conversion method, a rule followed by protocol conversion can be provided, so that proxy equipment and a proxy system of a home network terminal can be managed in a long distance manner.