Succinea daucina was originally described by Pfeiffer in 1854 from Calcutta, India. In this paper, S. daucina collected from western Baiyanggou, Urumqi, Xinjiang (43°24.674′N, 87°08.620′E, altitude 1 785 m) was observed using anatomical methods. Two different colored shells were found in specimens, yellowish-brown and light yellow. Ten adult specimens of each colored shell were measured and dissected. Drawings of the internal structures were made with the aid of photographs taken using a D700 Nikon digital camera. Radula and jaw of three specimens of each different colored shell were photographed using a LEO 1430VP scanning electron microscope. The results showed that shell of S. daucina was elongate-ovate, medium-sized (10.06﹣12.90 mm in height, 6.28﹣8.56 mm in width), very thin, with 3﹣3.5 whorls (Fig. 1). Radular formula was 16-21:10-13:1:10-13:16-21. Central teeth were tricuspid, and lateral teeth and marginal teeth were bicuspid (Fig. 2). Body of living and alcohol-preserved specimens was cream-white with a small amount of black pigmentation (Fig. 3a). Receptaculum seminis was one. Albumen gland and prostate gland were big. Penis was thick-walled and tubular, and about 3/4 was enclosed by penial sheath (Fig. 3b, c). Two different colored shell specimens were one species, S. daucina, due to their same radula, jaw and anatomical characters. Voucher specimens were deposited in the College of Life Science and Technology, Xinjiang University.