A　fatigue　loading　system　with　20　Hz　was　established　to　simulate　loading　characteristics　of　ballastless　track　concrete.　The　surface　resistivity　(SR)　method　was　utilized　to　evaluate　damage,　and　its　applicability　was　also　explored.　The　results　showed　that　the　value　of　SR　method　(rho)　and　damage　variables　(D　rho)　exhibited　a　three-stage　trend　under　fatigue　load　corresponding　to　concrete　damage　process,　while　frequency　and　stress　level　displayed　major　influence　on　Stage　III.　Although　moisture　content　and　measurement　duration　had　noticeable　impacts,　rho　effectively　expressed　fatigue　damage　features　in　different　concrete.　This　study　highlights　SR　method　for　accurately　assessing　fatigue　damage　and　predicting　service　life　of　ballastless　tracks.