Abstract: The present invention provides a connecting device, a beverage bottle, and a mobile terminal support comprising the beverage bottle. A first protrusion and a second protrusion which are sequentially connected are arranged on a main body of the connecting device; the first protrusion is eccentrically arranged relative to the main body, and the first and second protrusions are concentrically arranged. A mobile terminal ring buckle pasted on the back side of a mobile phone sleeves the first protrusion, and the second protrusion limits the ring buckle. The mobile phone is fixedly supported when the mobile terminal ring buckle sleeves the beverage bottle. Meanwhile, by setting the size relations among the first protrusion, the second protrusion and the bottle cap main body, the mobile terminal support may become a portable support through which the raising angle of the mobile phone can be adjusted.