Abstract: The invention relates to a method for ultrasonically welding electrical conductors. According to said method, the conductors (32) are introduced into a compression space (30) that is delimited by at least two confining elements and are welded together after closing the compression space, ultrasound being applied via a sonotrode (16) and the conductors which are to be welded being impinged upon by pressure via a counterelectrode (18). In order to be able to verify the quality of the welding point by using simple measures, the pressure in the compression space (30) is relieved following welding (32) of the conductors, whereupon an ultrasonic pulse is applied to the welded conductors while the same are impinged upon by pressure, and a modification in the distance between the sonotrode (16) and the counterelectrode (18) is measured thereafter.