This invention relates to the field of reading aids, and specifically discloses a portable reading aid, comprising a first clamping frame, a second clamping frame rotatably mounted on the side of the first clamping frame, a rotating frame fixedly mounted on the side end of the first clamping frame, and a side rotating frame movably mounted on the side end of the second clamping frame, the rotating frame and the side rotating frame being rotatably connected; wherein, the inner walls of both the first and second clamping frames are provided with inclined grooves, and the space between the two inclined grooves is used to place a book, and two guide rods with a width smaller than the guide grooves can slide inside the guide grooves without jamming, and by designing the second clamping frame to be movable, it can be kept at the same level as the first clamping frame after unfolding, reducing the horizontal difference of the book during reading, further improving the comfort of reading, and the whole process only requires the user to unfold the second clamping frame and make secondary adjustments.
