  This paper gives a 2D hamonic lattices model with missing bond defects, when
the capacity ratio of defects is enough large, the temperature gradient can be
formed and the finite heat conduction is found in the model. The defects in the
2D harmonic lattices impede the energy carriers free propagation, by another
words, the mean free paths of the energy carrier are relatively short. The
microscopic dynamics leads to the finite conduction in the model.
