Watercress is sweet and cool in nature, with the effect of clearing the lungs and moistening dryness, while Chen Kidney clears heat and lowers Qi. Combined with boiled pork elbow, this soup has the effect of clearing heat and moistening the lungs, and facilitating the bowel movement, especially suitable for children with dry cough without phlegm, parched mouth and pharynx, dry bowel movement, and poor gastrointestinal performance.

Chinese medicine experiments, watercress taste sweet and cool, non-toxic, with cool throat and lungs, expectorant cough, appetizer stagnation, cool blood, diuretic and other therapeutic effects, is conducive to the prevention and treatment of dryness due to laryngitis, tonsillitis, etc., on whooping cough, tuberculosis, and other respiratory diseases eaten with very good benefits, can be said to be a medicinal can be a vegetable seasonal gourmet dishes.