Women physiological period generally refers to the period of menstruation, menstruation period is not recommended scraping, so as not to cause increased menstrual flow or menstrual period prolongation and other adverse reactions. The first thing you need to do is to get a good deal of money to pay for the services of the company. As a result of the scraping can be to move qi and blood, scraping during menstruation has caused menstrual increase or menstrual period prolongation and so on the possibility, so do not recommend menstruation use scraping therapy. If you need to use gua sha therapy, it is recommended to go to a professional medical institution.