When people need tonic for lack of qi and blood, they often think of Astragalus and Angelica at first, especially those women who are sallow, panting and sweating after a little activity. Astragalus membranaceus is a drug for invigorating qi, which is sweet and warm in nature, tonifying the middle warmer and benefiting qi, treating exterior deficiency, and has the effect of consolidating exterior and stopping sweating. Angelica sinensis is an important drug for nourishing blood and regulating menstruation. Sweet taste, warm nature, rational qi and blood circulation. Suitable for people with blood deficiency and fear of cold.

Astragalus membranaceus and Angelica sinensis are used in the ratio of 5: 1 (30g of Astragalus membranaceus and 6g of Angelica sinensis), which is the representative prescription of Danggui Buxue Decoction for invigorating qi and promoting blood production. According to the method of "blood loss must replenish qi", astragalus is used to replenish qi, which is the source of blood. Yang begets yin, while healthy qi begets blood. This prescription is suitable for patients with massive hemorrhage, metrorrhagia, postpartum and ulcer due to spleen deficiency and blood deficiency. This prescription is very suitable for people with weak body and deficiency of both qi and blood to nourish the body, and it can also make women rosy and play the role of beauty beauty.

Both Radix Astragali and Radix Angelicae Sinensis are warm drugs, and long-term use will cause heat burning yin. Long-term use of Radix Astragali and Radix Angelicae Sinensis by people with yin deficiency and internal heat can lead to the rise of deficiency fire, which can cause and aggravate symptoms such as dry mouth and five-upset fever. Such people should not take it for a long time or in excess.

Radix Astragali and Radix Angelicae Sinensis have strong effects of invigorating qi and promoting blood production. Women with menarche, heavy menstruation and deep red color eat astragalus and angelica, which easily leads to prolonged menstruation and endless dripping. Such people should also avoid using it.

Although Radix Astragali and Radix Angelicae Sinensis can treat symptoms such as deficiency of both qi and blood, fever due to blood deficiency during menstruation and postpartum, headache due to blood deficiency, it is necessary to control the dosage, understand the contraindications and avoid physical discomfort caused by taking the medicine.