1989, signed by the Ministry of Health, the Education Commission and other ministries and commissions, designated September 20th of each year as tooth drying day, which is also tooth love day. The purpose of this activity is to mobilize social forces, popularize the knowledge of dental disease prevention among the masses, enhance the concept of oral health and self-awareness of oral health care, establish oral health care behavior, and improve the oral health level of the whole nation. Setting up tooth love day is an important measure to strengthen oral prevention and implement the policy of putting prevention first.