The efficacy and function of yam yam, sweet in taste and flat in nature; Enter lung, spleen and kidney meridians. Spleen strengthening; Moisten the lungs; Consolidate kidney; Benefiting essence to treat diarrhea due to spleen deficiency; Eat less and edema; Cough and asthma due to lung deficiency; Quench thirst; Nocturnal emission; Take it down; Frequent urination due to kidney deficiency; External use to treat carbuncle swelling; Lapis lazuli Yam, Yuzhu and crucian carp soup: porridge soup ingredients: yam 30g, crucian carp 250g, Polygonatum odoratum 15g, 3 slices of ginger, a little salt and monosodium glutamate. Production method: Scales, gills and viscera of crucian carp are cleaned and cut into sections, and Polygonatum sibiricum, Rhizoma Dioscoreae and Rhizoma Zingiberis Recens are cleaned and cut into small pieces; Put the above materials together in a saucepan, add appropriate amount of boiling water, cover the saucepan, simmer for 2 hours, and season with salt and monosodium glutamate. Nourishing yin and liver, invigorating spleen and benefiting qi. It is suitable for chronic hepatitis and persistent hepatitis with spleen deficiency and yin deficiency. Eat the most.