Exemplary embodiments of the present disclosure provide a method and apparatus for controlling a target device of a host and a client for supporting a service for the target device which has connectivity not supported by the host. According to an exemplary embodiment of the present disclosure, the method for controlling the target device of the host includes: receiving, from a first client having the same connectivity as that of at least one target device, target information on the target device, and managing the target information; and, when a service request signal for the target device is received from a second client, transmitting, to the target device, a service control signal for controlling the target device using the target information.