  In this talk, I present a theory of quantum gravity beyond Einstein. The
theory is established based on spinnic and scaling gauge symmetries by treating
the gravitational force on the same footing as the electroweak and strong
forces. A bi-frame space-time is initiated to describe the laws of nature. One
frame space-time is a globally flat coordinate Minkowski space-time that acts
as an inertial reference frame for the motions of fields, the other is a
locally flat non-coordinate Gravifield space-time that functions as an
interaction representation frame for the degrees of freedom of fields. The
Gravifield is sided on both the globally flat coordinate space-time and locally
flat non-coordinate space-time and characterizes the gravitational force.
Instead of the principle of general coordinate invariance in Einstein theory of
general relativity, some underlying principles with the postulates of
coordinate independence and gauge invariance are motivated to establish the
theory of quantum gravity. When transmuting the Gravifield basis into the
coordinate basis in Minkowski space-time, it enables us to obtain equations of
motion for all quantum fields and derive basic conservation laws for all
symmetries. When the spinnic and scaling gauge symmetries are broken down to a
background structure that possesses the global Lorentz and scaling symmetries,
we arrive at a Lorentz invariant and conformally flat background Gravifield
space-time that is characterized by a cosmic vector with a non-zero
cosmological mass scale. We also obtain the massless graviton and massive
spinnon. We show a mechanism for quantum inflation caused by the quantum loop
contributions. The Einstein theory of general relativity is expected to be an
effective low energy theory. Two types of gravity equation are resulted.
