The paper introduces Planck scale into the Newtonian law of gravity for the model simplification. The terms of Newtonian gravitational force can be separated into two parts, namely Dark Matter and Dark Energy respectively. They are inverse relation to the distance. In the very early Universe, the novel model gives the sum “attractive force” of all matters in the cosmos. It indicates that Inflationary Universe firstly and then Universe expands slowly on condition that the accelerated velocity is slowing down for ever. In the galaxy scale, the paper gets the local “attractive force” of different galaxies by using the novel interaction model. It shows the intercommunity property in the formation process of different galaxies, where the matter suppresses firstly, sharp inflates secondly, slowly expands finally. Otherwise, the novel interaction model solves the problem about the flat rotation curves of galaxy by considering the change of the mass ratio of Dark Energy and Dark Matter. All results of simulation show that the core of our Universe is hollow now.