It is for the first time that the borehole sonic perspective method has gain-ed practical effect in prospecting for metallic ore deposits in China. Thispaper describes basic principles of this method, its field observatiou systemaud working method, main characters and technical behaviors of instruments,tomographic imagery processing method for sonic data and software. Acousticproperties of rocks and ores in copper-iron deposits and lead-zinc-silver depo-sits and characteristics of transmission wave anomalous fields of ore bodies arediscussed. Case studies are given concerning the utilization of this method insearching for concealed and deep-seated blind ore deposits,determining locationsand attitudes of ore bodies and delineating ore bodies, and the data obtainedillustrate the effectiveness of this method. During the ore prospecting practicein the Daye copper-iron deposit, in particular, the borehole sonic survey pei-formed in two barren drill holes 180m from each other led to the discovery ofanomalies caused by blind ores beside the drill holes and the subsequent deli-neation of two ore beds. Later, drilling inspection revealed ore beds 39.12 mand 17.77 m iespectively in thickness. The spatial pcsitions of ore bodies rela-tive to the drill holes and their depths and attitudes are all in agreement withwhat was inferred, indicating good results.