Abstract: A stretching structure for sunshade body. The structure includes a stem, an auxiliary lever, a push lever, an upper beehive, a lower beehive, several upper support ribs, several lower support ribs, several cock members, several pivot blocks, several arch fitting blocks, several L-shaped fitting blocks and two metal cords. When stretching the sunshade body, a locating collar fitted on the stem is upwardly pushed or downwardly pulled and located by a locating handle. At this time, the upper support rib pivotally connected with the locating collar drives the auxiliary lever which drives the push lever and the lower support rib so as to upwardly and outwardly stretch open the upper and lower support ribs.