In order to improve test efficiency and to evaluate reliability of monitoring CCD which is composed of CCD Camera and baffle that is customized as specified requirements, some appropriate testing method for main factors involved in reliability of monitoring CCD is proposed, as well as auto-testing model including comprehensive evaluation function and auto-testing flow. More than two hundreds of monitoring CCD are used in Shenguang-Ⅲ (SG-Ⅲ) system now, to ensure high reliability of the whole system, every monitoring CCD should be tested carefully. The experimental results show that the proposed testing methods for main factors and auto-testing model are adequate to evaluate the reliability of monitoring CCD, and the average time of auto-testing is shortened evidently on comparison to that of manual testing method.