Abstract: [Purpose/Significance] This paper aims to study relationships between the "four only" elements in Humanities and Social Sciences and compare the seriousness of the "four only" problem. It will help to grasp the key issues, so as to provide targeted policy recommendations for solving the "four only" problem. [Method/Process] This article analyzes relationships between the "four only" elements to find the key elements, then compares and analyzes the elements in terms of reward and scarcity, and further analyzes the severity of the "four only" problem. [Results/Conclusions] The study found that: thesis and works are the most important meta-research results of researchers in Humanities and Social Sciences; the rewards of different research elements are heterogeneous; "hats" is the most important research factor; the "only hats" is more serious than the other elements. Finally, the following policy suggestions are put forward: academic evaluation should pay more attention to the reward of publishing thesis and works; solving "only papers" problem can solve the "four only" problem; we must properly solve the "only hats" problem.

Key words: humanities and social sciences, four only, paper, project, talent engineering