Select Kunming seismic station placed inside the cave broadband seismograph BBVS-60 and placed in underground deep well broadband seismograph GL-S60B recorded seismic data, signal to noise ratio, P wave to time difference, waveform correlation and waveform spectrum analysic were performed and the difference between the ground and borehole is obtained. The results show that:①The signal to noise ratio of underground station is limited compared with that of ground station, only NS is obviously improved. ②The P wave recorded by the ground and borehole is basically the same. ③Seismic waves on the ground and borehole, in the epicentral distance is less than 3.1°, waveform correlation is very low or even irrelevant, after the epicentral distance is greater than 3.1°, waveform correlation is high. ④When the epicentral distance is less than 3.1°, 1.5~8Hz background difference, is causing the ground and borehole seismic waveform difference of main reasons.