The telephone line of Peking University Stomatological Hospital is busy because of the signal congestion of patient consultation. The relevant information letter shows that the address of the first outpatient department is No.37 Xishiku Street, Xicheng District, Beijing; Address of the second outpatient department: A2 and B5 of Anli Garden, No.66 Anli Road, Chaoyang District, Beijing; Address of the third clinic: Room 203, Floor 2, Gaode Building, Huayuan North Road, Haidian District, Beijing. Address of the Fifth Outpatient Department: Room 305, Block A, Jiahui International Center, Chaoyang District, Beijing. Peking University College of Stomatology is a national key stomatology college, which implements the trinity management system of stomatology college, stomatology hospital and stomatology research institute. Its purpose is to train senior stomatologists, popularize and improve the level of prevention and treatment of oral diseases, and undertake national and relevant scientific research projects of the Ministry of Education and the Ministry of Health.