Objective To understand the general situation of studies on TCM spleen yin theory from the angle of bibliometrics.Methods Taking the CNKI database as the source and the periodicals stored in the library of Dalian Medical University as a supplement

the literatures concerning about the studies on TCM spleen yin theory from January 1978 to December 2009 were retrieved.The bibliometrics method was applied to make an analysis of the 380 literatures on spleen yin theory in line with the enrollment standard to confirm the main research authors

main periodicals

study situation of spleen yin and spleen yin deficiency

and studying direction in the field of spleen yin theory studies in China.Results The literature accumulation curve accords with linear growth（R=0.988

P<0.01）

having formed the core periodicals and authors.Theoretical research

clinical application

and experimental research were the three major types of literatures

of them

those on the theoretical research were the most in quantity

occupying 48.16% of the total amount.Conclusion The research on spleen yin theory is increasing year by year in China.The framework of TCM spleen yin theory has been formed and it guides the clinical diagnosis and treatment effectively.