If the mother has toothache during the menstrual period, she can take the following ways to deal with it: 1.Self-cleaning: if the mother has toothache during the menstrual period, she can rinse her mouth with light salt water and brush her teeth carefully to relieve the symptoms by cleaning her teeth; 2.Visiting a doctor: if the mother fails to relieve the symptoms by self-cleaning, she needs to consult a dentist to find out the cause of toothache, such as tooth decay, periodontitis, inflammation of tooth socket and root, etc. The dentist will perform appropriate operations for different causes. At the same time, the mother should inform the dentist that she is in the period of menstruation. If the toothache is caused by caries, a simple filling will be needed after cleaning, while pulpotomy may be given for apical inflammation. Usually, routine local treatment in dentistry is more effective and does not interfere with breastfeeding.