Fire refers to the condition of internal heatiness. Astragalus is warm in nature, and if it is taken in excess or for a long period of time without the right evidence, it may lead to the condition of internal heatiness. Astragalus has the effect of tonifying qi and solidifying the surface, elevating yang and stopping diarrhea (elevating yang to treat diarrhea), nourishing blood and promoting the production of fluids, and promoting water retention and elimination of swelling (facilitating urination and eliminating edema), and can be used to treat qi deficiency and weakness, superficial deficiency and spontaneous sweating (due to the weakness of the surface of the body and the frequency of natural sweating), the sinking of the middle qi (the weakness of the spleen and stomach qi and the appearance of the internal organs and other manifestations of the fall), prolonged diarrhea and prolapse of the anus, loose stools (thin and unshapely feces), qi deficiency and edema, and so on. Its nature is slightly warm, sweet taste, so in the case of overdose and long-term non-corrective use of the case may appear to heat and fire, causing fire. If you want to avoid fire after taking astragalus, you need to take it according to your condition and under the guidance of a professional doctor.