A support frame includes a frame body and a sliding module. The frame body has a first guiding rail and a second guiding rail, wherein the first guiding rail is opposite to the second guiding rail and the first guiding rail is made of a magnetic induction material. The sliding module is slidably disposed on the frame body. The sliding module includes a plurality of first spherical bodies and a plurality of second spherical bodies, wherein the first spherical bodies rotatably abut against the first guiding rail, the second spherical bodies rotatably abut against the second guiding rail, and at least one of the first spherical bodies is a magnetic ball.