A quickly-fixable electronic device includes a fixing portion, a first base portion, and a second base portion. The fixing portion is provided with an electronic device. The first base portion is pivotally connectable with the fixing portion. The first base portion is provided with a receptacle. The receptacle receives and connects with the fixing portion. The second base portion is pivotally connected with the first base portion. The second base portion is provided with a magnetic attraction piece. The magnetic attraction piece enables quick fixing of the electronic device to a display screen. A pivoting motion between the fixing portion and the first base portion enables rotation of the electronic device by an angle. A pivoting motion between the first base portion and the second base portion enables inclining and swinging of the electronic device.