Astragalus and Red Astragalus are different in terms of drug source and traits. Different drug sources: Astragalus is the root of Astragalus mongoliae or Astragalus membranaceus, family Leguminosae. Astragalus is the dried root of Astragalus membranaceus, family Leguminosae. Different traits: Astragalus, yellow-white surface, the inner layer of brown ring and radial texture, the outer layer of zigzag fissures, the center of the yellow peripheral gray-yellow or light brown, with longitudinal lines. Astragalus, outer skin reddish brown or yellowish brown. The cut surface of the cortex is yellowish-white, the formation of layer ring light brown, xylem light yellow-brown, radial texture. Astragalus should not be used in cases where the surface is solid and evil, sores are at the beginning of ulcers, or where heat and toxicity are still prevalent after ulcers have collapsed. If there is any discomfort, it is recommended to consult a doctor. If medication is needed, it should be identified by a doctor and standardized treatment should be prescribed by a doctor.