But when eating canned fish, you should also pay attention to that it is best not to exceed 2 cans per week (each can contains about 225 grams of fish); Among them, fried fish and smoked fish should not exceed 1 can; Pregnant women, nursing mothers and young children should try not to eat. People who like to eat canned fish should pay attention to a balanced diet, eat more fresh vegetables, fruits, beans and potatoes, and improve their anti pollution ability, so as to avoid the possible adverse effects on health caused by eating a large amount of canned fish for a long time. When eating canned fish, it is best not to eat more than two boxes a week.