To provide an electric slide rail for a vehicular seat making brush portions stably slide-contact with electrode plates.

In the electric slide rail for the vehicular seat, when a runner 3 slides along a lower rail 2, the brush portions 8, 9 slides and contacts with the electrode plates 11, 12 extending along the lower rail 2, and electricity is supplied to an output connector terminal 13 through the brush portions 8, 9. At that time, brush contacting surfaces 11a, 12a provided on the electrode plates 11, 12 are formed as tilting surfaces, so that the brush portions 8, 9 are obliquely pressed. Consequently, the brush portions 8, 9 are easily slid and contacted with the electrode plates 11, 12. Even if the height level of the brush contacting surfaces 11a, 12a on the electrode plates 11, 12 is changed due to vibrations of a vehicular body and deformation of the rail, contact failure of the brush portions 8, 9 is hardly occurred.