Metal film coupon test is a method which can comprehensively and efficiently accesses the suitability of storage or display materials in museum.A special image acquisition hard ware device was designed by using the airtight illuminant and color industrial camera,and clear images of coupons is got.The Software system achieves the functions of modularization of capturing images,opening the original images,image segmentation processing and materials evaluation,and also achieves visualization interface in accordance with specific functions.A large number of experiments show that this system can evaluate and filter the materials used in storage and display cases of museum collections rapidly and accurately,as well as make the conversion from human observing to computer visual calculation in evaluating and classfying these materials.It has the characteristics of rapid,objective,less errors and is very important to the effective protection of cultural relics.