Research conclusions: The comprehensive geophysical exploration patterns for the bridge with high pier and big span under complex geological condition are as follows: ( 1) The comprehensive geophysical exploration is conducted with the three levels of the exploration precision． ( 2) The selected geophysical methods include the audio magnetotelluric method ( CSAMT or AMT) ，shallow seismic reflection wave method，DC electric sounding or high density resistivity method，tomography on cross － hole elasticl wave method，tomography on cross － hole electromagnetic wave method and single －hole well logging method． ( 3) The attention should be paid to the location survey stage and the main pier position of the recommended plan．