Abstract: Objective: To explore the feasibility of cardiac magnetic resonance imaging (MRI) for evaluating the complexity of the left ventricular trabeculae in patients with hypertension, analyze the relationship between MRI characteristics and left ventricular function, and preliminarily investigate the correlation between left ventricular trabecular mass and hypertension severity. Methods: Cardiac function parameters and left ventricular trabecular mass were measured using cardiac MRI in 84 patients with hypertension and 30 healthy volunteers. The left ventricular myocardial trabecular mass was calculated using the following formula: (left ventricular end-diastolic volume − blood volume) × 1.05 − papillary muscle mass. Analysis of variance (ANOVA) was used to investigate differences in left ventricular function and left ventricular trabecular mass among the participants, and multivariate linear regression was used to analyze independent correlations between myocardial trabeculae and clinical indicators, as well as left ventricular MRI parameters. Results: When comparing left ventricular function parameters, left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV), second peak filling rate (PFR2), second filling volume (FV2) and total filling volume (FV) in the normal group were significantly lower than those in the hypertension groups Ⅰ, Ⅱ, and Ⅲ. The data were Bonferroni corrected and the results were consistent. The left ventricular trabecular mass in the hypertension groups Ⅰ, Ⅱ, and Ⅲ was found to be significantly higher than that in the normal group, and there was a significant difference between grade III and grade I hypertension. Multiple linear regression analysis showed that heart rate, systolic blood pressure, left ventricular myocardial mass, and left ventricular ejection fraction (LVEF) were significantly correlated with left ventricular trabecular mass and negatively correlated with left ventricular trabecular mass, while systolic blood pressure and left ventricular myocardial mass were positively correlated. Conclusion: Left ventricular wall hypertrabeculation is a common phenomenon in patients with hypertension. An increase of left ventricular trabeculation is closely related to functional changes in the left ventricle.