The invention provides an alloy flat wire processing and forming device applied to the technical field of alloy flat wire production and processing and further relates to a method for rolling wires by using same. A wire rolling mechanism (5) is arranged between a wire paying-off mechanism (1) and a wire winding-up mechanism (2) of the alloy flat wire processing and forming device, and an upper roller (7) and a lower roller (8) of the wire rolling mechanism (5) are installed on a rolling mechanism support (6). The wire rolling mechanism (5) further comprises an adjusting part (11) for adjusting a gap between the upper roller end face (9) and the lower roller end face (10), and the wire winding-up mechanism (2) is connected with an electric control mechanism (12) for controlling winding-up. By means of the device and the method, the wires can be ensured to be formed in the processing and forming process in one time, accordingly the labor intensity of operators is reduced, the production efficiency is improved, and the production cost is reduced.