Objective By MSCT of inferior turbinate shift nasal broaden the clinical curative effect evaluation, from the structure of nasal cavity and nasal objective function and the inferior turbinate shift nasal broaden the operation feasibility and superiority assessment, provide basis, to evaluate the effect of operation for clinical treatment. Methods 50 cases with nasal obstruction patients as the research object, all patients before MSCT scan showed different degrees of inferior turbinate hypertrophy of nasal stenosis in preoperative and postoperative patients underwent the CT measurement and nasal resistance meter measurement. Results Compared with before surgery, IER, EER, MDTB, MDTT, NLDT, right ITT, left ITT were significantly different (t=-17.831, -22.982, -8.321, 8.703, 6.710, 12.126, 14.492, P<0.05). The total resistance and MDTT, MDTB were negatively correlated (-0.570 -0.551, P<0.05). The total resistance and MDTT, MDTB were negatively correlated (R values were -0.570, P, -0.551<0.05). Conclusion Multi slice spiral CT measurement is an objective method to prove the nasal cavity structure change after nasal cavity widening, and the nasal resistance measurement is an objective method to evaluate the nasal airway pressure.