The invention relates to a shock-absorbing fence. While inhibiting any change of the effective height of a guard net at rockfall, the trapping capability for falling rocks is improved to thereby attain an enhancement of safety. A safety net is provided between the bottom portion of a guard net and the ground so that at rockfall the safety net while maintaining the state of blocking any gap at an inferior area of the guard net allows an elongation deformation following any flexure deformation of the guard net.