Abstract: To understand the stability of underground tunnel supported by steel arch under shock wave, we analyze dynamic response parameters of the supported steel arch, and measure and analyze dynamic strain and acceleration of the supported steel arch which is from burst source 100 m distance. The measurement result shows that the tunnel and supported steel arch of the measuring position is influenced by low frequency vibration mostly and most of vibration frequency is under 20 Hz; the surface acceleration value of the measuring fracture is about 20 m/s²；the max strain measured value of the supported steel arch which superimpose dynamic strain and static strain is 414 ×10^-6,it means that the supported steel arch under blasting impact is still in regime of elastic deformation.