An electronic device, an input/output assembly and a bracket structure are provided. The bracket structure includes a first bracket. The first bracket includes a first face, a second face and a third face. The first face and the second face are arranged on two opposite sides of the first bracket. The third face is connected to the first face and the second face. The second face is provided with at least two accommodating chambers. The first face is provided with at least two through holes corresponding to the at least two accommodating chambers. The third face is provided with a mounting hole passing through the first face and the second face. The mounting hole is arranged between two of the at least two accommodating chambers.