From formulation and implementation of the Open Science Cloud, the sharing and utilization of scientific data have been effectively promoted in the member states of European Union(EU). Using both field and online investigations,the article systematically discusses the construction and practice of EU Open Science Cloud from two aspects: program planning(open scientific framework, data opening and protection standards) and course of implementation(cloud construction,cloud security and cloud application). Compared with the current situation of insufficient open science infrastructure in China, this study provides recommendations for China’s open science practice, including designing of open science policies at the top national level, open science infrastructure planning and establishment of guiding principles for data protection. These actions will help China to enhance its open science development.