Abstract:Matching a .inductive magnetometer with its preamplifier is the keyest technique in magnetatelluric sounding s}rstem, The major difficulty Lies in meeting the high technical requirements such as low noise,small temperature drift,wide frequency band, high sensitivity,optimum impedance matching, simple transfer characteristics and powerful anti-interference ability, Matching methods of different frequency bands for different purposes are simply described to aver-come the mentioned technical difficulties, Same matching ways and transfer characteristics are illustrated in the paper.