Try not to eat crayfish during menstruation. Because crayfish belongs to the cold food, if you eat it may cause pain in the lower abdomen, clinically cause dysmenorrhea. Crayfish will have parasites in the body, if it is not cooked, it is likely to cause parasitic infection. So in the non-menstrual period, if you eat crayfish should also pay attention to be cooked to avoid parasitic infection. During menstruation, it is advisable to keep warm and soak your feet in hot water every day to promote blood circulation, which can reduce the discomfort in the lower abdomen caused by menstruation. It is also recommended to drink a bowl of hot brown sugar water every day during menstruation to help the menstrual blood to be discharged more smoothly, which can reduce the discomfort in the lower abdomen.