You should never eat iced food when you have your period. The temperature of ice is below zero, and the normal body temperature of human is about 37℃. If you suddenly eat cold food, it will cause vasoconstriction when it enters the stomach, which will lead to contraction of the smooth muscle of the uterus, thus causing menstrual pain. Frozen drinks and food taken out of the refrigerator should not be eaten immediately, and it is recommended that they be brought to room temperature before eating. Although menstruation is a normal physiological period for women, you should also pay attention to keep warm, in addition to not eating cold food, but also use hot water to soak your feet every day, which has the effect of strengthening the body, can make the menstrual blood flow more smoothly, to eliminate the fatigue of the menstrual period.