Research assessment is an important tool and mean of scientific research management, and it is also the compass of scientific research in colleges and universities. British has engaged in scientific research evaluation for 30 years, and during this process, it has formed a set of effective and complete scientific research evaluation mechanism with a certain representative function. On the basis of "Research Assessment Exercise" (RAE), in 2006, UK began brewing "Research Excellence Framework" (REF), and it was formally implemented in 2014, completed in 2015. By introducing the organization structure, evaluation experts, evaluation content and standard, evaluation method of the evaluation system of scientific research in UK, this paper puts forward some suggestions on the evaluation of scientific research in China.