The invention relates to an electric dipole frequency domain electrical sounding method and a device suitable for quasi far field. The method comprises the following steps of : arranging transmission of power supply in a specified exploration region; transmitting power generated by the power supply to a multi-frequency current transmitter, which generates a current containing n main frequency components and transmits the current to the ground through a transmitting electrode; arranging receiving electrodes in a selected transmitting-receiving distance and measuring the transmitting-receivingdistance r; transmitting ground-generated voltage response containing electric distribution information into a multi-frequency voltage receiver through a receiving electrode, measuring the voltage response containing n main frequency components from the ground by the receiver through the receiving electrode, d by the invention, etc. The invention also includes a relevant device. The invention hasthe advantages of simple instrument equipment and easy measurement procedure, and requires no measurement for quasi far field. The invention is suitable for sounding underground geological structure,mineral distribution, etc. in quasi far field.