Qi and blood deficiency may be caused by bad habits, congenital deficiencies, and long-term illnesses. 1. Bad living habits: metabolism slows down significantly due to excessive dieting for a long period of time, staying up late, etc., resulting in low resistance and insufficient generation of qi and blood, which may lead to qi and blood deficiencies. 2. Congenital deficiency: Malnutrition of the mother during pregnancy due to partiality or other reasons, illnesses during pregnancy that injure the mother’s vital energy, premature birth, etc. may lead to congenital deficiency of qi and blood in the fetus. 3. Long-term illness: long-term illness does not heal the body organs caused by damage, resulting in degeneration of internal organs, energy, etc., and over time, there will be a deficiency of qi and blood. The appearance of qi and blood deficiency need to consult a doctor in time to rule out the causes of disease. In daily life, we need to eat a balanced diet to ensure that the body needs nutrients.