This creation relates to a new structure of a power bed mattress stop, in particular to a device in which the electric bed can prevent the mattress from slipping when lifting. The new structure of the electric bed mattress stop frame is composed of two positioning seats and a stop frame; the positioning seat is internally provided with a perforation and a groove is cut on one side; the stop frame is a ㄇ-shaped rod Both ends are U-shaped elbows. When assembling, the positioning seat is screwed on the bed plate of the electric bed, and then the U-shaped elbows at both ends of the stop frame are inserted into the perforations of the positioning seat, and the groove of the positioning seat forms a click, so that the mattress is not raised when the electric bed is lifted or lowered. It will be slipped by gravity due to the degree of tilt, which is quite practical.本創作係有關於一種電動床床墊止檔架之新結構,特別是指一種電動床在升降時可以防止床墊滑落之裝置。該電動床床墊止檔架之新結構係由二定位座及止擋架所組成;該定位座內部設有一穿孔,並於一側切削有凹槽;該止擋架係為一ㄇ型桿,兩端呈U型彎頭。組裝時將定位座螺固於電動床之床板上,再將止擋架兩端之U型彎頭套入定位座之穿孔,與定位座之凹槽形成卡掣,使電動床升降時床墊不會因傾斜程度而受重力作用滑落,具有相當之實用性。