Signal transmitting method and device

The invention discloses a signal transmitting method and device. The method includes that a base station receives an uplink pilot signal sent by a legal user equipment and determines a direction vector parameter used for receiving confidential singles and a first channel attenuation parameter of the channel used for transmitting the confidential signals of the legal user equipment; according to the direction vector parameter and the first channel attenuation parameter, a first signal beam former parameter used for emitting the confidential signals is calculated; an artificial noise signal emitting area is determined according to the direction vector parameter and a second signal beam former parameter for emitting the artificial noise signals is calculated; the to-be-emitted signals are processed by utilizing the first signal beam former parameter and the second signal beam former parameter; the signals subjected to processing are emitted. Energy leakage of the confidential signals sent to the legal user equipment by the base station is minimized in a non-target direction and the emitted artificial noise signals are centralized in an area with comparatively high confidential signal leakage risks, and interference on signal receiving of legal user equipment in other directions is reduced.