The main causes of spleen-kidney yang deficiency syndrome are as follows:

1.

2. Prolonged diarrhea and dysentery will damage kidney yang and spleen and kidney.

3. water pathogen persists for a long time, and kidney yang deficiency is weak, so spleen yang cannot be warmed.

4. spleen yang is deficient for a long time, so it can't nourish kidney yang.

All the above reasons can lead to the damage of both spleen and kidney yang and qi, resulting in spleen and kidney yang deficiency syndrome. The etiology and pathogenesis of spleen and kidney yang deficiency syndrome are mostly caused by spleen and kidney being chronically ill and consuming qi and damaging yang, or chronic diarrhea and dysentery, or chronic stagnation of water evil, which leads to kidney yang deficiency and failure to warm and nourish spleen yang, or spleen yang deficiency and kidney yang deficiency, and finally spleen and kidney yang are both damaged. Spleen is the foundation of acquired, and kidney is the foundation of congenital. Spleen governs the transport and transformation of Shui Gu subtle, which depends on the warmth of kidney yang, and kidney essence also depends on the continuous supplement and transformation of Shui Gu subtle. Spleen and kidney, acquired and congenital are mutually endowed and influenced. "Must read for medical practitioners": "... spleen and kidney, water is the yuan of all things, soil is the mother of all things, two dirty organs are in harmony, one body is cured, and all diseases are not born. The husband's spleen has soil virtue, and the spleen is safe, so the kidney is more secure. The kidney is both fire and water, and the kidney is safe, so the water does not carry the liver and the soil is wet, and the fire can benefit the soil and make it subtle, so the kidney is safe and the spleen is more secure. "