The invention relates to a sun shading device used for outdoor sun-shading, in particular to a sunshade capable of carrying out automatic opening and closing. According to the specific technical scheme, the sunshade capable of carrying out automatic opening and closing comprises a shell body with a placement space, wherein a reel and umbrella cloth are erected in the placement space, the two ends, in the longitudinal direction, of the umbrella cloth serve as a connecting end and an extending end respectively, the connecting end of the umbrella cloth is connected with the reel, the extending end of the umbrella cloth extends out of the shell body, a pull plate is arranged at the extending end, umbrella cloth opening mechanisms are arranged at the two ends, in the transverse direction, of the umbrella cloth respectively, and are arranged in the shell body, each umbrella cloth opening mechanism comprises a driving source which is erected on the shell body, a transmission assembly and a telescopic rod which is in linkage connection with the transmission assembly, the other end, opposite to one end which is in linkage connection with each transmission assembly, of each telescopic rod is hinged to the pull plate, a sliding chute is formed in the pull plate, each telescopic rod can carry out overturn and sliding movement in the sliding chute, and a drive motor which can be separated from the reel or can be in linkage connection with the reel is arranged on the shell body. According to the technical scheme, the sunshade capable of carrying out automatic opening and closing is small in size, can carry out automatic opening or closing, and is simple in structure.