Chinese medicine believes that the spleen and stomach are related to the five organs as follows: 1. The relationship between the spleen and stomach and the heart: if the spleen and stomach are weak, resulting in insufficient qi and blood, the heart loses its nourishment (the heart loses its nourishment), there may be a deficiency of both the heart and the spleen, which may be manifested as dizziness, palpitations, fatigue (mental exhaustion and physical weakness), pale face, pale claws and nails, and so on. 2. Relationship between the spleen and stomach and the lungs: if the weakness of the spleen and stomach affects the lungs or the deficiency of lung qi affects the spleen and stomach, resulting in deficiency of both the lungs and the spleen, symptoms such as fatigue, coughing and weakness, dullness (lack of appetite, reduced food intake), loose stools (thin and unshaped feces), etc. will be seen. 3. Relationship between the spleen and stomach and the liver: when the relationship between the spleen and stomach and the liver is imbalanced, there may be deficiency bleeding; there may also be imbalance between the liver and spleen, which may be manifested as fullness and pain in the chest and ribs, depression or irritability, lack of appetite, abdominal distension, loose stools, and so on. 4. Relationship between spleen and kidney: Spleen and kidney yang deficiency can occur when spleen yang is weak, leading to kidney yang deficiency, or when kidney yang deficiency leads to spleen yang deficiency, which can be characterized by lumbar and knee weakness, fatigue, and coldness. Professional medical questions suggest consulting a doctor.