PURPOSE: An echo healing low frequency magnetic field generating apparatus is provided to generate more accurate low frequency magnetic field, by switching on/off a switch at accurate timing by a micro control unit (MCU). CONSTITUTION: An echo healing low frequency magnetic field generating apparatus includes a circuit for generating low frequency magnetic field. The circuit comprises a voltage generation part, a first digital/analog converter and a second digital/analog converter, a first voltage/current transformer (20) and a second voltage/current transformer (25), a first switch a and a second switch b, a first switch b and a second switch a, an inductor (L) and a switch control part. The voltage generating part generates a digital voltage of a discrete sine wave with a constant period. The first digital/analog converter and the second digital/analog converter convert the digital voltage into an analog voltage. The first voltage/current transformer and the second voltage/current transformer are connected to the output part of the first and the second digital/analog converter, and transform voltages outputted from the first and the second digital/analog converter into currents. The first switch a and the second switch b are serially connected to the output part of the first voltage/current transformer. The first switch b and the second switch a are serially connected to the output part of the second voltage/current transformer. The inductor is connected between a contact point between the first switch a and the second switch b and a contact point between the first switch b and the second switch a. The switch control part generates a switch control signal which controls the first switch a, the second switch a, the first switch b and the second switch b. [Reference numerals] (20) 1 V&rarr；I； (25) 2 V&rarr；I； (AA) Switch control unit； (BB) Voltage generating unit； (CC) 1 DAC； (DD) 2 DAC； (EE) 1 SW_a； (FF) 1 SW_b； (GG) 2 SW_b； (HH) 2 SW_a본 발명은 저주파 자계 생성 회로를 포함하는 에코 힐
