During treatment by NCPAP, there are some changes about pressure, FiO2 and SpO2, the onset of pressure ≥ 6 cmH2O were 46.7% patients decreased to 6.3%, increase in FiO2 from 52.79 ± 9.66% to 43.27 ± 3.74% and increase in SpO2 from 84.99 ± 4.24% to 98.22 ± 0.9%.