The invention relates to a silver plated fiber with an anti-discoloration layer and a manufacturing method thereof, and mainly provides the silver plated fiber with the anti-discoloration layer which can prevent discoloration and has anti-bacterial effect. The silver plated fiber comprises a fiber main body which is formed by fiber materials and comprises an outside surface, a plurality of silver atom agglomerations of which the silver atoms agglomerate in a local area of the outside surface, the anti-discoloration layer and a plurality of fine cracks, wherein the anti-discoloration layer which takes metals selected from titanium, gold, platinum, palladium and the like, and/or an alloy formed from the metals as materials forms a similar film pattern to attach on the outside surface and the agglomeration groups in a mode of film coating, and the fine cracks are formed on the anti-discoloration layer so that the anti-discoloration layer is discontinuous; and therefore the silver atom agglomerations are prevented from discoloring through the anti-discoloration layer and the fine cracks, which has no influence on the anti-bacterial effect of the silver.