Purpose/Significance Aiming at the construction of smart libraries in medical universities and colleges, the paper introduces the concept of user portrait and analyzes the current situation of mobile resource push in libraries of medical universities and colleges.Method/Process By using the user portrait technology, the framework is built through data collection, data analysis and behavior modeling, combined with the accurate push of mobile resources in smart libraries. Result/Conclusion It provides references for mobile resource accurate push service of smart libraries in medical universities and colleges in the era of big data.