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We centrally study effect of very high voltage 345 kV T/L which is set up at residential area (Yangyang Donghae in Gangwon-do) to broadcasting radio wave and human body. First, to compare predicted result of radio wave disturbance, we set 7 areas 13 point and divide broadcasting quality, electric and magnetic fields in T/L process. Result of estimation, we confirm that when receiving broadcasting radio wave, broadcasting quality`s difference is generated by topographic property of near receiving point. Also through result of electric fields and broadcasting quality and their comparison, we judge that high voltage T/L is barely affect receive of broadcasting radio wave. To judge effect of magnetic fields to human body, we analyze magnetic fields in variable area and condition. As a result, magnetic field of every area has 1.8 mG (WHO international standard amount is 833 mG). So it is proved that magnetic fields of 345 kV Yangyang Donghae area has slight, tiny effect to human body.