We study the fragmentation of eight massive clumps using data from ATLASGAL 870 µm, SCUBA 850 and 450 µm, PdBI 1.3 and 3.5 mm, and probe the fragmentation from 1 pc to 0.01 pc scale. We find that the masses and the sizes of our objects follow M ∼ r 1.68±0.05. The results are in agreements with the predictions of Li (2017) where M ∼ r 5/3. Inside each object, the densest structures seem to be centrally condensed, with ρ(r) ∼ r −2. Our observational results support a scenario where molecular gas in the Milky Way is supported by a turbulence characterized by a constant energy dissipation rate, and gas fragments like clumps and cores are structures which are massive enough to be dynamically detached from the ambient medium.