The invention relates to a flat cable inner core stabilizing device, and belongs to the technical field of cable production, the flat cable inner core stabilizing device comprises a cable stabilizing mechanism and a device base, the cable stabilizing mechanism comprises two groups of cable stabilizing components, and each stabilizing component comprises a stabilizing wheel, an adjusting mechanism and a dial indicator; the adjusting mechanism comprises a first
micrometer head, a device frame, a first positioning rod, an auxiliary mounting plate, a main mounting plate, a first spring, a second positioning rod, a second
micrometer head, a second spring, a third spring and a fourth spring. According to the wire stabilizing device suitable for the flat wire inner core, the flat wire inner core can be effectively fixed and prevented from deviating, twisting or scattering, so that the stability of the production process of the flat wire inner core is improved, efficient and accurate stabilization of inner cores of different specifications can be achieved through cooperation of the stabilizing wheel and the adjusting mechanism, and the production efficiency is improved. The stability effect and the stability quality are improved, the stability effect can be viewed more visually and efficiently due to the introduction of the dial indicator, and the later monitoring difficulty is reduced.