Abstract: A foldable vehicle window shading device includes a central hub having a receiving cavity, and a plurality of folding arms radially extended from the central hub, a plurality of elongated elements extended from the central hub to the folding arms respectively, and an awning shelter supported by the folding arms for sheltering the vehicle window. Each of the folding arms includes a plurality of tubular members wherein a tension portion of the respective elongated element is slidably passed through the tubular members in such a manner that when shortening the length of each tension portion of the elongated elements, the tubular members of each folding arm are tensionally coupled with each other ends to ends to outwardly extend the folding arm from the central hub, so as to tensionally stretch out the awning shelter.