The Theory of System Relativity is based on the premise of the assumption of the quantization of matter and introduces a brand new view of matter in terms of "monism and dualism". In view of the serious contradictions existing among the current different branches of physical theories, the author conducts a preliminary study from the perspective of the Theory of System Relativity and attempts to incorporate the different branches of physical theories into the theoretical framework of the Theory of System Relativity. Especially to the general relativity and the quantum theory, the author takes his unique view that the two different theories may achieve unity although the serous contradictions existing between them. This book is a brand new way for matter principle. It can be used as a reference book for philosophy and fundamental physics research, and also be available for physics enthusiasts and relevant personnel.