Objective Todiscuss the feasibility and the value of dGEMRIC in diagnosis of ea rly stage of chondromal acia patellae. Methods 41 patients with Chondromalacia patellae patients at early stage.3D-FS-SPGR series horizontal scan, the patients were asked to walk for 10min to make the medium disperse into the cartilage. The patients underwent dGEMRIC scan 2h later. The results compared with Arthroscopy results. Results Normal patellar articular cartilage was evident on the series band and visible high-and low-high signal three-storey structure in 3D-FS-SPGR series. Cartilage damage are relatively low signal in 3D-FS-SPGR. Are focal in dGEM RIC series high signal. 3D-FS-SPGR scan of patellar cartilage stageⅠ showed the rate 36.8% (7/19), stageⅡ of Chondromalacia disease rate 50% (11/22), delayed enhanced stageⅠof Chondromalacia disease rate 73.7% (14/19), stageⅡof Chondromalacia disease rate 86.4% (19/22). The t test, patellar cartilage delayed enhancement scan in diagnosis of stageⅠand Ⅱ injury rate were significantly higher than the plain( StageⅠ t=2.646, P=0.016, StageⅡ t=2.531, P=0.017). Conclusion 3D-FSSPGR delay-enhanced judgement patellar cartilage injury more sensitive than flat whisk, is an early diagnosis of Chondromalacia patellae has advantages, non-invasive method.