The present invention relates to a key structure and a keyboard having the same. The key structure includes a seat, a conductive membrane disposed on the seat, a scissor assembly, a light source, and a cap. The seat has a plurality of protruding hooking portions. At least one conducting section is defined on the conductive membrane away from the central portion thereof. The collapsible scissor assembly is arranged between the seat and the cap. The key structure has at least one protrusion arranged above the corresponding conducting section. A rubber element having a hole formed on the top portion thereof is disposed centrally on the conductive membrane. The light source is arranged beneath and covered by the rubber element. The cap is disposed on the scissor assembly. The protrusion may be arranged on the side portion of the scissor assembly or the undersurface of the cap.