The proton density distribution of Hg206 is calculated in the framework of the Skyrme-Hartree-Fock approach with the SLy5, SLy5 + T, and SLy5 + Tw interactions. It is shown that the central density drops strongly with the SLy5 and SLy5 + T interactions due to the vacancy of the 3s1/2 orbital. This means that the density depression in the interior of the nucleus is not so much influenced by the tensor force of the SLy5 + T interaction. However, with the SLy5 + Tw interaction the bubble structure does not exist because the tensor force effect of this interaction leads to the inversion between the single-proton states 3s1/2 and 1h11/2 (3s1/2-1h11/2 inversion) so that the 3s1/2 state is fully occupied by protons. In addition, a detailed discussion on the antibubble effect from the pairing interaction is performed by using the Skyrme-Hartree-Fock-Bogoliubov approach. It is found that a proton bubble structure in Hg206 is unlikely to appear because of the paring correlation.