There are many reasons for qi and blood deficiency, such as poor congenital constitution, overwork and malnutrition. The specific causes should be decided in conjunction with the patient’s symptoms. 1. Poor innate constitution: poor innate constitution leads to qi and blood deficiency, Chinese medicine believes that “the spleen and stomach is the source of qi and blood biochemistry”, the innate poor function of the spleen and stomach, the spleen and stomach digestion and absorption is not good, which leads to insufficient qi and blood, qi and blood deficiency. 2. Excessive exertion: Chinese medicine believes that labor is exhausting, that is, too much exertion will deplete the body’s qi, qi deficiency over time leads to qi does not produce blood and thus the formation of blood deficiency, ultimately leading to qi and blood deficiency. 3. Malnutrition: Unreasonable dietary structure and unbalanced nutritional intake can cause symptoms of qi and blood deficiency. 4. Excessive blood loss: Excessive blood flow caused by postpartum and traumatic injury can lead to qi being lost with blood, i.e., the body’s qi is dissipated along with the blood, resulting in qi and blood deficiencies in the end. It is recommended that patients with qi and blood deficiencies should seek medical attention in a timely manner.