The invention discloses a vehicle braking device and a vehicle comprising the same. The vehicle braking device comprises a braking main cylinder, a first driving unit and a second driving unit, wherein the braking main cylinder is provided with a first cavity chamber, a second cavity chamber and a third cavity chamber, the first cavity chamber communicates with fluid of a braking pipeline, the second cavity chamber is connected with the first cavity chamber, and the third cavity chamber is connected with the first cavity chamber but is separated from the second cavity chamber; the first driving unit comprises a braking pedal, the braking pedal is connected with the second cavity chamber, and action of the braking pedal can drive braking fluid in the second cavity chamber to flow to the braking pipeline and drive the braking fluid in the braking pipeline to flow to the second cavity chamber; and the second driving unit is connected with the first driving unit in series and is connected with the third cavity chamber, and the second driving unit can drive braking fluid in the third cavity chamber to flow to the braking pipeline and drive the braking fluid in the braking pipeline to flow to the third cavity chamber. The vehicle braking device is beneficial to accurate flowing of the braking fluid in the switching process of two driving modes, so that precise switching of braking under the two driving modes is ensured, and reducing of the pipelines is facilitated.