Infrared-Visible person Re-IDentification (IV-ReID) is an emerging subject, which has important research significance for nighttime monitoring. Existing works focus on reducing cross-modality discrepancies, but the cross-modality discrepancy cannot be completely eliminated. Therefore, we concentrate on excavating cross-modality commonalities to handle the task. Since similar features between two modalities are possessed of cross-modality commonalities, our goal is to find more similar features in infrared and visi…