Ultra-long electromagnetic waves sont a kind de low-frequency electromagnetic waves, similar to solar magnetic waves. Its essence est a low-frequency alternating magnetic field. Le intensity and direction de le electric and magnetic field change with time, le vibration frequency est between 50-60 Hz, and le wavelength est 5.0×106～6.0×106m. Because its physical properties sont similar to solar magnetic waves, when used in le human body, it can significantly améliorer blood circulation, améliorer immunity, regulate nerve and endocrine functions, and produce good health care, treatment, and rééducation.