Smilax china is a climbing plant species in the genus Smilax. It is native to China, Korea, Taiwan, Japan (including Ryukyu and Bonin Islands), Philippines, Vietnam, Thailand, Myanmar, and India. It is also known as china root, china-root, or chinaroot, as is the related Smilax glabra.
The stem is woody, sparsely prickly, and long. Petiole is long; leaf blade is elliptic to orbicular, long and wide, sometimes wider. Berries are red, globose, and in diameter.
Kaempferol 7-O-glucoside, a flavonol glucoside, can be found in S. china.
In China, S. china occurs in forests, thickets, hillsides, grassy slopes, and shaded places along valleys or streams. It is found from near sea level to .
In Korea, its leaves and roots are used as herbs.