Fixing device

A fixing device is characterized in that the fixing device comprises a fixing base, a clamping jaw, an operation key and an actuating piece, and a concave clamping groove is formed in the fixing base; the clamping jaw is movably arranged on the inner wall of the clamping groove, and the clamping jaw can extend out of the clamping groove to clamp a connecting object; the operation key is movably arranged on the fixed base; the actuating piece is arranged in the fixed base and connected with the operation key, and the actuating piece can actuate the clamping jaw to enable the clamping jaw to retreat from the clamping groove. When the fixing device disclosed by the utility model is used, a connecting object only needs to be aligned and clamped, so that stable connection can be realized; when the connecting object needs to be detached, the connecting object can be easily taken down by only pressing the operation key. The fixing device disclosed by the utility model is novel in use mode, simple and convenient to o