Objective To evaluate diagnosing values of continuous MRI during enhancement to hepatocelllular carcinoma and promote diagnosing coincident rate. Methods 39 patients with hepatocellular carcinoma confirmed by histology or clinical were performed CT plain scan, multiple phase contrast enhanced scan and MRI plain scan, continuous dynamic enhanced scanning. Intensifying models of tumors in dynamic enhancement were observed. From continuous dynamic enhancement of MRI, timesignal intensity curves of tumor, aorta, portal vein and liver tissue were drawn and dynamic multi-imaging were reconstructed. Benign and malignant manifestations of both enhancing ways were classified, counted and compared. Results Types of time-signal intensity curves in continuous dynamic enhancement of MRI were 27 rapidly ascend and rapidly descend, 6 rapidly ascend and slowly descend (plane), 5 slowly ascend and descend, 1 slowly ascend. Model of multi-phase enhancing were 20 intensity in arterial phase, no intensity in portal and delay phase, 5 intensity in 3 phases, 4 no intensity in arterial phase, intensity in portal and delay phases, 10 no intensity in 3 phases. Continuous dynamic enhancing MRI showed more malignant characters of tumors than routine multi-phases CT enhancing (χ2 =37.375, P＜0.000). Grade of tumor were classified as affirmative benign, possible benign, uncertain possible malignant, affirmative malignant by synthetic diagnosis. Accordingly, number of cases in continuous dynamic enhancing MRI ordinally were 1, 2, 3, 5, 28 and number of cases in multi-phase enhancing MRI ordinally were 2, 3, 6, 7, 21. Continuous dynamic enhancing MRI had higher diagnosing coincident rate than multi-phase enhancing CT(χ2 =49.259, P＜0.000). Conclusion Continuous dynamic enhancing MRI could shows full intensifying process of contrast medium. Compared with multi-phase enhancement, It is able to analyse severally tumor and promote diagnosing coincident rate of hepatocellular carcinoma. So continuous dynamic enhancing MRI is a way of deserving generalization.