<p><strong>Objective</strong>: Assessment of cardiac function by the assessment of ventricular pacing and right ventricular apex pacing. <strong>Method</strong>: Analysis of 30 patients with VVI pacemaker (pacing RVA, right ventricular apical pacing RVS 15 cases) was analyzed, and the differences of cardiac function and pacing parameters were analyzed in one year. <strong>Results:</strong> There was no significant difference in the impedance, voltage threshold and R wave height between the 1 year after the effective pacing and the years after the pacing electrode. 1 year after the two groups of patients with significant differences in EF. <strong>Conclusion: </strong>Right ventricular septal pacing and right ventricular apical pacing are equally safe and effective, right ventricular apical pacing can lead to left ventricular systolic dysfunction and decreased left ventricular function.</p>