Open science has touched the overall scientific research ecology, and is a scientific research scenario that enables funding agencies, research institutions, information service organisations, the public and other relevant parties to collaborate and participate in scientific research activities across a variety of barriers, as well as scientific research results, processes, and facilities to be accessible, understandable, assessable and reusable. This website aims to provide management of the overall CAS OA platform, provide external services, and realise the CAS to take the lead in building a new academic communication model. Based on the overall construction framework of CAS OA, it integrates the existing platforms and tools such as iSwitch, IR Grid, GoOA, OAinONE and iAuthor, and provides all kinds of open science resource platforms and tools based on the whole process of open science workflow built by CAS and even in China, and through the ‘Recommendation of High-quality Open Access Resources’ (Open Resource Evaluation). Through the ‘Open Resource Evaluation’, it realises open access to high-quality OA resources, provides browsing, searching and downloading functions, allows users to obtain papers free of charge, and opens up the evaluation of papers.