Sudden cold shivering during menstruation may be caused by puerperal infection, maternal cold, low blood sugar and other reasons. 1. Puerperal infection: After giving birth, the mother will discharge a large amount of bad dew, if the cleaning is not in place, puerperal infection may occur, and after the infection, there will be fever, coldness, and even shivering, etc. The mother’s body is weak due to blood loss. 2. Maternal cold: maternal loss of blood after childbirth, the body is weak, resistance to decline, sensitive to the environment, inadvertent cold will occur after the body cold shivering. At this time, you need to increase or decrease the clothing in a timely manner, to avoid the wind and cold, you can drink more warm water to drive away the cold. 3. Hypoglycemia: maternal in addition to their own need for nutrition during the month, but also to feed the newborn, if there is no timely food or not enough food is easy to hypoglycemia, manifested as cold and shivering. It is necessary to replenish sugar water to relieve the discomfort caused by hypoglycemia and eat in time. It is recommended that mothers with sudden chills and shivering go to the hospital in time to have the cause clarified and then follow the doctor’s instructions for treatment.