Abstract: An electronic-card reader structure includes a first plate, and a second plate. A printed circuit board is disposed between the first and the second plates. Two ends of the covering are respectively connected with the first plate and the second plate. The position of the covering is correspondingly to the printed circuit board. The first plate, the second plate and the covering are constructed as a rectangle casing with a dimension of a floppy disk. The built-in electronic-card reader structure has better mechanical and structural strength and the material for manufacturing the electronic-card reader structure is further reduced.