A cover buckle structure contains a male buckle, a female buckle, a receiving groove, and a cover. The male buckle includes two resilient retainers disposed on two sides thereof, each resilient retainer has a positioning projection fixed on a front end thereof. The female buckle includes two openings defined on two sides thereof, and each opening has a locking block mounted therein. The receiving groove is formed on a back surface of the female buckle and includes a connecting shaft pivoted on a rear end thereof and a slot arranged on a front end thereof. The cover includes a C-shaped notch defined on a rear end of the cover so as to fit the connecting shaft and includes an engaging button fixed on a front end of the cover and retained into the slot.