Blackfish, sweet and cold in nature, contains 17% protein, 1.7% fat, as well as sugar, inorganic salts, vitamins A and B1, niacin and other substances. It has the function of tonifying the spleen and stomach, inducing diuresis and eliminating swelling, and can be used to treat hepatitis, edema in pregnancy, kidney disease, and dampness paralysis. Usage: one big black fish, remove the intestines and scales, wash, add 50 grams of winter melon skin, 3 grams of white onion, 9 grams of garlic, no salt, boil the soup, eat the fish and drink the soup, 1 dose per day for 7 days, can treat cardiogenic edema, edema in pregnancy, renal edema and so on. A large black fish, remove viscera and fish scales, add 30 grams of astragalus, 15 grams of danshen, **** decoction, drink soup and eat fish, can treat chronic active hepatitis, cirrhosis, ascites and other diseases.