A differential frequency type impact massager is configured with a receiving space within the casing. One end of the receiving space is communicated to the outside through two openings. Two impact power units are configured within the receiving space, and are partially protruded from the casing respectively through the two openings. The two impact power units are respectively combined with a massage head and a control unit which is connected therewith through a main circuit board, a three-stage operation switch, and a control circuit board. The control circuit board is configured with a plurality of adjustment units, and each of them is linked with a plurality of adjusting knobs configured outside the housing. The housing is extended with a grip portion on one side, and the grip portion is configured with the three-stage operation switch for activation control. The linking of each adjusting knob with the adjusting units may form different control adjustment, such that the main circuit board can respectively control the two impact power units to generate the linear rhythmic impact effects with different strength and frequencies.一種差頻式衝擊按摩裝置,在一機殼內部設有容置空間,此容置空間一端經二開口對外連通,二衝擊動力單元設置在前述容置空間內,該二衝擊動力單元分別以局部通過二開口凸伸在機殼外,並分別結合一按摩頭,一控制組件是以一主電路板及、一三段式操作開關、一控制電路板與前述二衝擊動力單元分別形成連結,在控制電路板上設有複數調整單元,各調整單元分別與複數設置在機殼外的調整旋鈕形成連動,且該機殼旁側延伸一握把部,該握把部上設有一能控制啟動的三段式操作開關,利用各調整旋鈕連動調整單元形成不同的控制調整,使主電路板可分別控制二衝擊動力單元產生不同力道及頻率的直線律動性衝擊效果。1‧‧‧機殼11、12‧‧‧側殼體112‧‧‧握把部113、123‧‧‧開口121‧‧‧容置空間13‧‧‧背蓋2、20‧‧‧衝擊動力單元3‧‧‧控制組件31‧‧‧主電路板32‧‧‧三段式操作開關33‧‧‧控制電路板331、332、333、334‧‧‧調整單元341、342、343、344‧‧‧調整旋鈕4、40‧‧‧按摩頭
