Dendrobium stems are upright, plump and slightly oblate, with a length of 10~60 cm and a thickness of 1.3 cm. The upper part of Dendrobium stem is folded, the base is obviously narrowed, unbranched, with many nodes, and the nodes are sometimes slightly swollen. Internodes are a little inverted cone-shaped, 2~4 cm long, and golden yellow after drying. The leaves are leathery, oblong, 6~ 1 1 cm long and 1~3 cm wide, with blunt apex, unequal length and 2-cleft stems at the base. Racemes emanate from the upper middle part of the old stems with leaves or fallen leaves, with a length of 2~4 cm and 1~4 flowers; Peduncle is 5~ 15 mm long, and its base is covered by several tubular sheaths. Bracts are membranous, ovate-lanceolate, 6~ 13 mm long, and the tip is tapered; Pedicels and ovaries are lavender, 3~6 mm long; Flowers are large, white, and lavender at the top, sometimes all lavender or all white except 1 purple spots on the lip disc; The middle sepal is oblong, 2.5~3.5 cm long and 1~ 1.4 cm wide, with blunt apex and 5 veins. Lateral sepals are similar to middle sepals, with sharp apex and oblique base, with 5 veins; Calyx capsule conical, 6 mm long; Petals are roughly oblique oval, 2.5~3.5 cm long and 1.8~2.5 cm wide, with blunt apex, short claws at the base, entire, 3 main veins and many branches; The lip is oval in width, 2.5~3.5 cm long and 2.2~3.2 cm wide, with a blunt top and purple stripes on both sides of the base, which narrows to short claws. The middle and lower sides are surrounded by gynoecium, with short eyelashes at the edge and short hairs on both sides. There are 1 purple patches in the center of the labial disc. Pistil is green, 5 mm long, slightly enlarged at the base, with green pistil feet; The cap is purplish red, conical, densely papillae, with irregular sharp teeth at the front edge. The flowering period is April-May.