The invention discloses a folding support frame with a buckle structure, which comprises a base, a bracket body, a sliding body, a positioning structure and a swing element, wherein the bracket body is pivoted with the base in a rotating way; the sliding body is arranged on the bracket body in a sliding way and further connected with a screen; the swing element is connected with the positioning structure in a swinging way; and the positioning structure is fixed in the bracket body. When the bracket body is folded on the base, the swing element swings towards the sliding body under the influence of gravity and is mutually buckled and fixed with the sliding body, the buckled and fixed sliding body is constrained and then cannot slide on the bracket body, and the screen is also fixed, so thefolding support frame with the buckle structure can bring convenience for a user to fold and pack the support frame, effectively reduce the folded and packed volume and simultaneously avoid collidingthe fixed screen in the carrying period.