A naive way to combine quantum and gravity

We propose a naïve way to combine quantum and gravity in terms of the quantum collapse in discrete space-time. It is denoted that the combination of quantum theory and general relativity requires the existence of discrete space-time. The physical meaning of discrete space-time is analyzed. We further argue that the discreteness of space-time may naturally result in the quantum collapse of wave function. A possible collapse model in the discrete space-time is briefly introduced. A natural way to combine quantum and gravity is finally proposed based on the discrete space-time and quantum collapse. We argue that it may provide a consistent framework for a fundamental theory of quantum theory.