The　elastic　resistance　coefficient　of　surrounding　rock　is　an　important　parameter　of　tunnel　structure　design,　and　is　characteristically　difficult　and　expensive　in　terms　of　in-situ　testing.　A　method　is　proposed　for　calculating　the　elastic　resistance　coefficient　based　on　the　measured　seismic　wave　velocity　of　the　surrounding　rock　in　advance　geological　forecasts　based　on　the　seismic　reflection　method.　Specifically,　the　dynamic　elastic　parameters　of　the　surrounding　rock　are　calculated　using　the　measured　seismic　wave　velocity,　then　the　static　parameters　of　the　surrounding　rock　are　calculated　based　on　the　relationship　between　the　dynamic　and　static　elastic　parameters　of　the　rock　mass,　and　the　elastic　resistance　coefficient　of　the　rock　mass　is　derived.　Taking　the　Tingzhou　tunnel　of　the　Ganlong　line　as　an　example,　it　is　determined　that　the　coefficients　of　the　tunnel　surrounding　rock　of　grade　III　and　IV　are　0.54~1.19　GPa/m　and　0.24~7.6　GPa/m　respectively.　The　above　calculated　values　are　consistent　with　the　data　for　elastic　resistance　coefficients　of　surrounding　rock　of　grade　III　and　IV　specified　in　the　＂Code　for　Design　of　Railway　Tunnels.＂　©　2017,　Editorial　Office　of　＂Modern　Tunnelling　Technology＂.　All　right　reserved.