A portable awning for the car. The present invention is to overcome the deficiency of bad effect of insulation and inconvenience for user. The point of solution includes a casing able to be separated into two portions along the length direction, and an awning body able be stored within the said two portions of the casing respectively, is characterized in that: the said awning body is a foldable body with continuous honeycomb section, the said two portions of the casing are provided with fixed structure used for fixing the car. Each Honeycomb Tube of the said awning body is an opening structure at the both ends.