The present invention relates to a shock-absorbing heel provided with a shock absorber for mitigating the load applied to the sole of a foot when walking and, more specifically, to a shock-absorbing heel provided with a shock absorber and attached to a high heel, the shock-absorbing heel comprising: an outer heel fixedly mounted to the rear surface of a sole of a high heel (shoe); an inner heel which has an elastic spring mounted to the upper side thereof and is coupled to the inside of the outer heel; and a bottom heel which is fixedly mounted to a lower end portion of the inner heel so as to be replaceable, wherein a cylindrical protective cap which is inserted so as to prevent the lower end portion of the inner heel from being exposed to the outside is provided on a lower end portion of the outer heel, and a coupling cover coupled to the inner heel above the elastic spring is inserted into the outer heel. Thus, the protective cap prevents dust or the like from outside from entering the inner heel while providing an aesthetically pleasing appearance, weight can be distributed to improve durability of use, and the outer heel slides up and down by virtue of the elastic spring to mitigate shock when walking.