ABSTRACT: First, the microscopic relativity is researched. In very small space-time, the velocity of light should have statistical fluctuation. In the higher-dimensional small reel space the velocity of light is variable and quantized. Very small space-time connects also with high-energy and high-speed. Next, the macroscopic and extensive quantum theory is discussed. Further, we investigate some possible methods, which modify and develop relativity and quantum theory. Finally, we propose some new equations of quantum mechanics with potential and interaction, and possible wave equations of general relativity.