The role of Night Frost is to assist in warming menstruation and relieving pain, reducing swelling and fever, strengthening the spleen and stomach (to restore the function of the spleen and stomach); pregnant women or people with allergies are contraindicated, as follows: 1. the role of night cold Su: ① night cold Su in the formula can achieve the effect of warm menstruation pain, for menstrual cramps, headache people; ② night cold Su root medication can achieve the effect of swelling and fever, often used to assist in the treatment of bruises, localized swelling and pain, fever, and other symptoms; ③ night cold Su in the formula can play the effect of strengthening the spleen and stomach, suitable for dietary irregularities resulting in spleen and stomach, belching (hiccup), flatulence, eructation (hiccup), and so on. (hiccups) caused by poor diet, belching (belching), flatulence, eructation (hiccups) and so on. 2. The contraindication to the use of Night Cold Soda is that it should not be used by pregnant women or people with allergies. It is worth noting that Night Cold Soda should be used under the guidance of a doctor.