A chassis structure includes a chassis body and at least one holder module. The holder module includes a frame and a guiding assembly. The frame is located in the chassis body and has a first linking portion and a second linking portion. The guiding assembly is disposed on the chassis body and has a first guiding slot and a second guiding slot. The second guiding slot has a first segment and a second segment. The first guiding slot and the first segment extend along a straight direction, and the second segment extends along an arched direction. The first linking portion and the second linking portion are adapted to move along the first guiding slot and the first segment respectively at the same time such that the frame moves upward, and then the second linking portion is adapted to move along the second segment such that the frame rotates.