Impedance　control　has　received　significant　efforts　in　recent　decades　in　robotics　as　impedance　control　aims　to　achieve　the　desired　mechanical　interaction　with　uncertain　environment.　This　paper　is　dedicated　to　the　overview　of　basic　concepts　and　principles,　implementation　strategies,　challenging　research　problems　and　interests,　etc.　The　objective　is　to　help　readers　quickly　get　into　problems　of　their　interests　related　to　impedance　control　and　provide　guidance　and　insights　in　finding　appropriate　strategies　and　solutions.