The present disclosure discloses a cable pressing structure and a lamp. The cable pressing structure adapted to fix a cable on a carrying base, includes: a main portion and a first connecting portion and a second connecting portion provided at both ends of the main portion, respectively. The cable pressing structure is configured to being detachably connected to the carrying base through the first connecting portion and the second connecting portion, and press and fix the cable on the carrying base; the main portion has a first side surface and a second side surface facing away from each other, a first cable pressing portion is provided on the first side surface, and a second cable pressing portion is provided on the second side surface. The cable pressing structure has a first installation state and a second installation state.