Unlike derived (advanced) therizinosaurids, the vertebral column was not highly pneumatized, however, the pelvis shows a marked therizinosaurid-like opisthopubic build.

Like other therizinosauroids, Suzhousaurus had elongated claws and neck for browsing, robust hindlimbs and a large trunk that ended on a reduced tail.

The specimen was described in 2007 by Li Daqing, Peng Cuo, You Hailu, Matthew Lamanna, Jerrald Harris, Kenneth Lacovara and Zhang Jianping, also naming the type species Suzhousaurus megatherioides.

Li and colleagues pointed out that Suzhousaurus might be identical to "Nanshiungosaurus" bohlini, an earlier named therizinosauroid found in the same geological group and also known from limited remains.

In more anterior vertebrae, large pleurocoels (small, air-filled holes) can be located on the lateral surfaces of the centra, but these progressively decrease in size.

[2] As a whole, the scapulocoracoid is a robust element that follows the shape of Segnosaurus and Therizinosaurus, but in a top view the scapular blade is very recurved, indicating a rather round thorax.

[2] On the large revision of the Therizinosauria performed by Lindsay Zanno in 2010, she found Suzhousaurus in a more derived position as the sister taxon of the Therizinosauridae representing the latest diverging therizinosauroid.

[4] In 2019, Hartman and team performed a phylogenetic analysis for the Therizinosauria using data provided by Zanno 2010 and found this time Suzhousaurus as a therizinosaurid taxon, however, with poor support.

[11] Results obtained by Zanno in 2010 for the Therizinosauroidea are shown in the cladogram below:[8] Alxasaurus Erliansaurus Neimongosaurus Enigmosaurus Suzhousaurus Nothronychus Nanshiungosaurus Segnosaurus Erlikosaurus Therizinosaurus The overall environment deposition of the Xinminbao Group suggests a clastic-dominated subsidence basin of low-relief in which weak, short-lived lakes repeatedly gave arise to open-land biomes.

The known specimens were recovered from the complex of the Mazongshan Dinosaur Fauna, which is composed by the contemporaneous genera of both Xiagou and Zhonggou formations.

[5] A high diversity of ornithothoracines is known from this formation such as Avimaia, Changmaornis, Dunhuangia, Feitianius, Gansus, Jiuquanornis, Qiliania and Yumenornis.

[12] Other theropod dinosaurs known from the gray-variegated beds of Suzhousaurus include the large ornithomimosaur Beishanlong and the predatory tyrannosauroid Xiongguanlong.

The remains of ceratopsians and therizinosaurs in these beds could reflect a preference of niches close to rivers and lakes, whereas hadrosauroids and sauropods probably inhabited more interior environments of the region.

In the Gongpoquan Basin, lacustrine-dominated conditions are represented by gray beds, which is consistent with a return to lacustrine deposits in the upper part of the Zhonggou Formation.