A base structure is used for bearing a display. The base structure includes a support and a seat. The support is connected to a display at one end and detachably disposed on the seat at the other end. The support has a buckling member, and the seat has at least one slot. The buckling member is fitted on the end of the support disposed on the seat, and is rotatable between a release position and a clamping position relative to the support. The buckling member has at least one baffle. When the buckling member is at the release position, the support is detached from the seat by passing the baffle through the slot. When the buckling member is at the clamping position, the baffle and the slot form an angle, and the baffle and the seat have a retaining relationship so as to lock the support on the seat.