A rotatable display fixing module is described. The rotatable display fixing module has a first rotational device, a second rotational device, a fixing switch and an auxiliary fixing stud. The first rotational device rotatably connects with a display and the second rotational device. The fixing switch and the auxiliary fixing stud rebound up to fix the second rotational device at predetermined angles and the auxiliary fixing stud passes through a fixing hole on a rotational element of the second rotational device. The display can therefore rotate on the first rotational device only. When the fixing switch and the auxiliary fixing stud are pressed, the display can rotate on the first rotational device and the second rotational device.