A method for improving active ingredients level in radish sprouts is disclosed. The method comprises: providing a tank used to load a medium providing an electric field forming a terminal voltage difference between one side of the tank and the opposite side of the tank with the terminal voltage is 10-30 kV modifying the medium by the electric field for 30 seconds and hydroponically culturing a germinated seed of radish sprouts with the modified medium for 5 days.一種提升蘿蔔芽菜植體內活性成份含量之方法,係包含:提供一容槽,用以容置一培養液;提供一電場,該電場於該容槽之相對二側形成一端電壓差,該端電壓差係介於10~30kV;以該電場對該培養液進行改質30秒,以獲得一改質培養液;及利用該改質培養液水耕栽培已發芽之蘿蔔芽菜種子5天。1‧‧‧容槽11‧‧‧電供給位置12‧‧‧底面2‧‧‧電壓產生裝置21‧‧‧發射端d‧‧‧預定距離M‧‧‧培養液S‧‧‧液面
