Rhubarb is the dry root and rhizome of Rhubarb palmatum (Rheum palmatum, L.) Rheum tanguticum (Rheum tanguticum Maxim. ex Regel) or Medicinal rhubarb (Rheum officinale Baill.)It is widely distributed in Shaanxi, southeastern Gansu, Qinghai, western Sichuan, Yunnan and eastern Tibet. Before the stem and leaves wither in late autumn or sprout in the next spring, dig them, remove the fine roots and skins, cut the petals or segments, and dry them. Rhubarb is one of the oldest, most commonly used and most important Chinese medicinal materials in China, with unique efficacy, rich resources and high medicinal value. Modern pharmacological research shows that rhubarb has pharmacological effects such as anti-tumor, antiviral, antibacterial and anti-inflammatory, hemostasis, and improvement of microcirculation. In this paper, the modern pharmacological effects of rhubarb in recent years are reviewed in order to provide some references for future research, development and use of rhubarb resources.