Since 1980, CRUSE GmbH in Germany has been providing world-class professional reproduction equipment and equipment for major museums, cultural relics collection and reproduction institutions in the world, including special reproduction equipment for special applications. German Cruse Company has a good cooperation record with national units in China. For example, the cruse 185ST scanner installed in the National Library has scanned the ancient stone tablets in China, thousands of poems, Peking Opera masks and some precious collections such as Oracle Bone Inscriptions for the national map. The National Cultural Relics Publishing House also purchased the CRUSE scanner. Yachang Group and Rainbow Group, domestic professional cultural relics copying institutions, have successively purchased five sets of CRUSE scanners of different models, and the Palace Museum, Rong Baozhai and the Central Archives Bureau have successively installed CRUSE scanners to scan and copy a large number of ancient paintings and calligraphy collected by China Palace Museum, Liaoning Provincial Museum and Nanjing Museum. The exhibition model installed in Huahui Company in Hangzhou also cooperated with Zhejiang Museum to copy the main paintings and calligraphy collections such as Huang, Wu Changshuo and Ten Scenes of West Lake. The successful market has proved that German CRUSE scanner is a professional digital reproduction system for copying collection-level paintings. This system realizes the realistic and perfect reproduction of the original paintings of collection-level paintings, and the replicas can be preserved all the year round. Depending on the materials and media used, the storage time can reach 75 years to 100 years. We believe that the popularization and application of this system will play a positive role in protecting the rich culture of the motherland.