The invention relates to a sunshade, in particular to an external supporting folding type sunshade. The external supporting folding type sunshade aims at solving the problems that a traditional sunshade is most an umbrella body with a built-in center rod, the center rod occupies sunshade space and influences activities of people, some sunshades with off-center center rods are poor in positioning stability and have potential safety hazards, mounting is inconvenient, time and labor are wasted, and the unfolding and folding operation of umbrella covers is inconvenient. A base is detachably connected to the ground, the other end of a second supporting rod is connected with the upper end of a rotary rod, the lower end of the rotary rod penetrates through an umbrella top sleeve to be connected with a shielding cap, and the umbrella top sleeve is in sliding fit with the rotary rod. A first sliding part does reciprocating motion in the length direction of the first supporting rod, a second sliding part does reciprocating motion in the length direction of the second supporting rod, the first sliding part, the second sliding part and the umbrella top sleeve are connected through a hinge supporting assembly, the umbrella top sleeve and the shielding cap are connected through a supporting frame for an umbrella cover, and the umbrella cover is arranged on the supporting frame for the umbrella cover. The sunshade is used for sun shading.