A two-way lock mechanism is disclosed in the present invention. The two-way lock mechanism includes a gear, a first sub-gear, a second sub-gear, a third sub-gear, a fourth sub-gear, a first hook, a second hook and a latch. The latch moves a first distance along a first direction to simultaneously rotate the gear, so as to respectively rotate the second sub-gear and the third sub-gear relative to racks on the first hook and the second hook, and to separate the first hook and the second hook from corresponding fixing portions. The latch further moves a second distance along a second direction opposite to the first direction for simultaneously rotating the gear, so as to respectively rotate the first sub-gear and the fourth sub-gear relative to the racks on the first hook and the second hook, and to separate the first hook and the second hook from the corresponding fixing portions.