  A new idea of quantum gravity is developed based on {\it Gravitational
Complementary Principle}. This principle states that gravity has dual
complement features: The quantum and classical aspects of gravity are
complement and absolutely separated by the planck length into planckian and
over-planckian domains, respectively. The classical Einstein equations are
correct at the fundamental level at over-planckian domain and general
relativity is not a low energy limit of a more fundamental theory. The quantum
gravity is totally confined to the planckian domain with a new kind of
ultra-short range interaction, mediated by massive (Planck mass) particles,
through the virtual microscopic wormholes of the Planck scale with action
$\hbar$. There is no room for gravitons or extra dimensions in this scenario.
It is shown that the hierarchy problem can solve the cosmological constant
problem via this new quantum gravity.
