Through direct interviews with 228 health workers involved in disinfection and sterilization activities at 2 traditional medicine hospitals (Hanoi and the Ministry of Public Security) on knowledge of disinfection and sterilization of medical instruments, showed that the right understanding rate about: - Concept of bacteriosis, low sterilization (44.30%; 40, 35%); in which the Hospital of Traditional Medicine, the right knowledge rate is higher than the Hospital of Traditional Medicine (60.00%; 51.58% vs 33.08%; 32.33%).