Abstract: Objective To assess the right ventricular systolic function in patients with corpulmonale with tricuspid annular displacement (TAD) measured by tissue motion annular displacement (TMAD) technology． Methods Forty three patients diagnosed with corpulomnale adm itted to our hospital from October 2011 to March 2013 were divided into two groups, group A (30 mmHg< PASP< 50 mmHg) with 20 cases, group B (PASP> 50 mmHg) with 23 cases, in addition, 32 cases of healthy individuals added as normal control group． The peak systolic displacements of tricuspid annulus at right ventricular free wall (T1), interventricular septum (T2), midpoint of tricuspid annulus (Tm) and the right ventricular longitudinal shortening (Tm%) were measured by TMAD, while ventricular ejection fraction was measured by real-time three-dimensional echocardiography, then all data collected in three groups were compared． Results Compared with normal control group, T1, T2, Tm, Tm% and RVEF of patients in group A and B with corpulmonale were lower than that in the normal control group (P< 0．05), T1, T2, Tm, Tm% and RVEF of patients in group B were lower than that in group A (P< 0．05), the difference was statistically signif cant． The parameters of TAD and RVEF were signif cantly positive correlated (P< 0．05)． Conclusion The measurement of TAD with TMAD technology can evaluate the changes of right ventricular systolic function in patients during different stages rapidly and accurately．