 "Qianxisaurus" is known solely from the holotype NMNS-KIKO-F044630, a nearly complete and articulated skeleton missing only the tip of the tail and the right hindlimb, housed at the National Museum of Natural Science in Taichung, Taiwan.The holotype is exposed mostly in a view from above, with the tail gradually turning to left side view.The skull measures at 7.6 cm in length, and the total length of the preserved parts of the individual is 76.8 cm.