The invention discloses a coupled-feeding reconfigurable antenna and a manufacturing method. The antenna comprises a feed source, a floor board, a dielectric plate, a low-pass filter, a low-frequency radiation unit, a radio-frequency switch, a first coupling sheet, a first high-frequency radiation unit, a second coupling sheet, and a second high-frequency radiation unit. The first side surface of the dielectric plate is provided with the first coupling sheet, and a feed point is connected with the feed source. The second side surface, opposite to first side surface of the dielectric plate, of the dielectric plate is provided with the second coupling sheet, wherein the second coupling sheet and the first coupling sheet are symmetric, and are equivalent to a coupling feed capacitor. The low-frequency radiation unit is disposed on the dielectric plate or a cellphone housing, and the low-pass filter is connected in series between a second contact of the low-frequency radiation unit and the feed point. The dielectric plate between the low-pass filter and the feed point is provided with a via hole. According to the embodiment of the invention, the antenna improves the radiation efficiency and gain of an antenna system, and finally improves the working performance of the antenna system.