Abstract: SYT method using natural electromagnetic wave method in geophysical exploration has been used for many years in fields of coal, petroleum, water conservation and engineering.The paper discusses the possibility to use SYT method to make a direct exploration of underground metallic mineralized belt or orebody from and at different angles to the ground surface to such degree as to immediately know their depth and thickness as if by drilling a hole.Two such exploration cases and the verification results of the accuracy of this SYT geophysical exploration method are presented.

Key words: SYT physical property detector, Metallic orebody, Natural electromagnetic wave