Whether a person with a bad liver can take astragalus depends on his constitution. If a person has a deficient qi constitution, such as those who are often weak, easily fatigued, easily catching a cold, easily sweating, having less food, having a pale tongue, white fur, and a thin pulse, they can drink astragalus to support the right qi. However, some patients with poor liver function exhibit strong liver fire, such as dry mouth, bitter mouth, bad breath, red tongue, yellow fur, and string veins, should not eat too much astragalus. The Chinese medicine believes that the excess of qi is fire, so eating too much astragalus will easily produce internal heat or aggravate the existing damp heat, so we should use Chinese medicine according to the patient’s constitution.