Abstract: The Alumina substrate of anodizing is a kind of LED substrate with excellent properties with the advantages of high thermal conductivity and high insulation.In order to improve the heat dissipation efficiency of LED，the performance test method of the developed aluminum substrate was studied.We made a comparative study on LED substrate thermal conductivity，the insulating property of the common metal electrode and the film adhesion test method，and select the appropriate test method of anodic alumina substrate was tested to evaluate the performance of key aluminum plate developed.The results show that the test method is reasonable，and the thermal conductivity，insulation performance and adhesion ability of the metal electrode film meet the application requirements.