The invention relates to a rail accessory, in particular to a deflection-resisting rail spacing device which comprises anti-bending binding beams and clamping components. The anti-bending binding beams are located below two steel rails on the same line and located between each two adjacent fasteners in the longitudinal direction of the steel rails, and the clamping components clamp and fix the two steel rails at steel rail webs or rail bottoms and at least partially fixed on the anti-bending binding beams. Transverse stiffness of the steel rails is enhanced while bending moment generated by the opposite rail bottoms when outside disturbing force is acted on rail heads of the steel rail can be offset effectively, shimmy of the steel rails during working can be controlled effectively, and the deflection-resisting rail spacing device is outstanding in advantage of overquick wear prevention of the steel rails and obvious in effect. In addition, the deflection-resisting rail spacing device is capable of effectively improving comfortability during train running and achieving excellent noise reduction performance, has the advantages of simple and compact structure, high utilization rate of rail space, excellent vibration reduction and noise reduction performances, economy, practicality, high applicability and the like, and quite wide in market application prospect.