The invention discloses a rapid spliced concrete formwork comprising a plurality of formwork bodies. The two ends of each formwork body are provided with a first extension part and a second extension part correspondingly. The first extension parts are attached to the second extension parts, and the sum of the thicknesses of each first extension part and the corresponding second extension part is equal to the thickness of the corresponding formwork body. The first extension parts are matched with the second extension parts of the formwork bodies on the front sides, and the second extension parts are matched with the first extension parts of the formwork bodies on the rear side. According to the matching structure of the first extension parts and the second extension parts, push rods with the ends provided with flanges are arranged on the first extension parts , counter bores are formed in the second extension parts, and the push rods penetrate through the counter bores; and springs are arranged between the flanges and the bottoms of the counter bores, electromagnets are arranged on the first extension parts, and permanent magnets are arranged on the second extension parts. By adopting the formwork, the formwork can be rapidly spliced and stored, the occupied space after storing is small, and carrying is convenient.