In natural ice and wind conditions, galloping of a transmission line is unpredictable. Temporary anchor pulling is a new emergency technology to suppress galloping when it takes place. The galloping process of a typical iced quad-bundle conductor line is numerically simulated, and the characteristics of vibration modes, amplitude and frequencies during galloping are analyzed. The numerical simulation method for dynamic response after employing anchor pulling during galloping is studied. For the galloping with vibration modes of single loop, double loop and triple loop that most frequently takes place, the effects of pulling positions and loads on galloping suppression efficiency and tension variation in conductor are investigated by means of the obtained method, and the pulling loads in the cases of the same vibration mode with different vibration amplitudes are discussed. The principles for determining pulling positions and loads during the implementation of temporary anchor pulling for emergency galloping suppression are provided, offering important guidance for the application of this emergency galloping suppression technology.