To do sweet and sour fish choose moderate size fresh carp, grass carp or yellowtail, etc., the meat is plump and rich in elasticity, more suitable.

Carp contains protein, VA, VE, VB and other vitamins, in addition to potassium, sodium, phosphorus, calcium, iodine and other mineral elements. The main effects are: can treat pediatric jaundice, pediatric diarrhea has a very good effect; can supplement a variety of vitamins and proteins, promote digestion and absorption, enhance resistance; chest tightness, bloating and other diseases have a certain effect; conducive to the removal of cold in the body, improve immunity; can prevent and control arteriosclerosis, coronary heart disease, but also to prolong life; is conducive to the mother's milk.

Grass carp is rich in unsaturated fatty acids, favorable to blood circulation, regular food can play a role in protecting the cardiovascular system, is a good food for cardiovascular patients. Grass carp is rich in selenium, often eaten with anti-aging, skin effect, also has a certain effect on the prevention and treatment of tumors; grass carp is rich in nutrients, rich in a variety of trace elements and a variety of vitamins, for the body is thin and weak, loss of appetite, is appetizing and nourishing, improve appetite, strong body nourishing good.