Abstract: A keyboard includes keys are provided. Each key includes a base, inner and outer frames and a key cap. The base has a body, a first hook and two second hooks. The first and second hooks are connected to the body. Each second hook has an L-shaped portion with one end connected to the body, and an inverse hook portion extending from the other end of the L-shaped portion to the body to form a space. The inner frame disposed on the body has a first opening. The first hook passes through the first opening to engage with a portion of the inner frame. The outer frame disposed on the body crosses the inner frame and has two second openings. Each second hook passes through the corresponding second opening to receive a portion of the outer frame in the space. The key cap is on the inner and outer frames.