; Gu Yun-Ting] Guangxi Univ, Coll Phys Sci & Engn Technol, Nanning 530004, Peoples R China
; [Zhou Li-Juan] Guangxi Univ Technol, Collaborat Grp Hadron Phys & Nonperturbat QCD Stu, Liuzhou 545006, Peoples R China
; [Ma Wei-Xing] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
We study the properties of QCD vacuum state in this paper. The values of various local quark vacuum condensates, quark-gluon mixed vacuum condensates, and the structure of non-local quark vacuum condensate are predicted by the solution of Dyson-Schwinger Equations in "rainbow" approximation with three sets of different parameters for effective gluon propagator. The light quark virtuality is also obtained in a consistent way. Our all theoretical results here are in good agreement with the empirical values used widely in literature and many other theoretical calculations.