Disclosed are a method and device for implementing a microwave device trusteeship. The method includes: a plurality of all-outdoor units (AOUs) are configured into a trusteeship mode; res the AOUs already configured into the trusteeship mode are respectively connected to the ports of the service units of an IP device; by accessing the IP device by the AOUs configured into a trusteeship mode, the connected AOUs are configured at the corresponding ports of the service unit of the IP device, and the virtual slot numbers of the connected AOUs are generated; and the IP device selects at least two AOUs from the plurality of AOUs already configured into a trusteeship mode to form a protection group, and sets a transmission unit number for each selected corresponding AOU, so as to virtually set each of the selected AOUs as a transmission unit of the IP device. The present invention enables a user to achieve the management of protection configuration, XPIC configuration, PLA configuration and other configurations, thereby achieving the unified management and quick configuration of all-outdoor devices, and facilitating the cooperative usage of the devices.