Crawfish can be eaten during the month, but should be eaten in moderation. It is not recommended for pregnant women who are allergic to crayfish or allergic to seafood. Mothers can eat crayfish during breastfeeding during the month. Crawfish contains high quality protein, niacin, vitamins, calcium and many other minerals. Due to the bleeding during labor, consume more nutrients, immunity decline, in the monthly period of maternity can be consumed through the consumption of appropriate amount of crayfish to supplement nutrition and calcium, etc.. But it is not recommended to eat more, so as not to aggravate the burden on the digestive tract. In addition, the maternal allergy to crayfish and other seafood, during the monthly period is not recommended to eat crayfish, in order to avoid skin itching, gastrointestinal reactions and other symptoms.