A key structure includes a carrying body, a frame body, a keycap and at least two connecting members. The frame body is disposed on the carrying body, and the frame body is disposed with a plurality of sliding grooves. The keycap has a plurality of cap edges and correspondingly covers the top of the frame body, and the keycap is disposed with a plurality of pivoting portions. The at least two connecting members are independent from each other. The at least two connecting members are connected between the keycap and the frame body, corresponding to the two cap edges opposite to each other. Each connecting member includes a pivoting rod and a sliding rod. Each pivoting rod pivots on each pivoting portion. Each sliding rod is slidably limited in each sliding groove, and the pivoting portions are correspondingly located on the outside of the sliding grooves.