Philosophy and Social Sciences Preprint Platform (PSSXiv) is an academic publishing and communication platform focused on emerging research across the humanities and social sciences. Sponsored by Renmin University of China and operated by the Renmin University of China Press and Publications Information Center, it connects researchers, reviewers, and scholarly journals through services for sharing and evaluating research.

Authors can submit unpublished papers for rapid online release, preliminary review, timestamped first-publication records, and open evaluation. The platform also supports journal-led commissioning, manuscript selection, peer review, and recommendations for reprinting, alongside multimedia dissemination. Its integrated open intelligent submission and review system offers dedicated services for authors, expert reviewers, and journals, as well as tools for intelligent search, in-depth reading, and writing assistance.

Users can browse and search papers across a broad range of disciplines, explore current research and calls for papers, and find literature leads. The platform also links users to citation and reprint information for source publications and reproduced materials, helping improve scholarly discovery and circulation.