Up to 50-60 % of patients admitted to our PICU and NICU needed endotracheal tube intubation. Since nasal endotracheal tubes have many advantages, pediatrics do not perform oral endotracheal intubation any more. However, after the removal of nasal endotracheal tubes, nursing staffs found that about 50 % of patients have nasal pressure sores The Incidental Event Quality Control Group] found that this complication was caused by improper fixation of the nasal endotracheal tube. To avoid nasal pressure sores, we improved the fixation method of nasal endotracheal tubes and standarized the nursing technique. We also developed quality control monitoring to ensure nursing quality of endotracheal tubes. After half a year (Jan. June, 1995) , the average days of nasal endotracheal intubation was 8.9 days, which was 3.8 days more than before (5. 1 days, June Nov. ,1994) . Disconnection happened 3 times (0.38%) , as compared with before ( 17 times, 2.63%) . There were 4 cases of nasal pressure sore (0.5%) , as compared with before (55 cases, > 8.5%) . We can objectively monitor nursing quality of endotracheal tubes after the establishment of nursing standardization and development of quality control monitoring. Since January, 1996, (from 1996 to Jan June, 1997) the disconnection rate decreased from 0.89% to 0.55 % . While the incidence of nasal pressure sore was 0 %. It indicated the safety and practicabity of this fixation method of endotracheal tubes.