By considering quantum impurities in the superconductors, we mimic their influences on the phase transition in a Josephson junction. It is found that the impurities in the superconductors can take nontrivial effects to the Josephson phase transition, and they are able to promote or hinder the $0\to \pi$ phase-transition phenomenon. Namely, for the 0 ($\pi$) junction with one impurity, it has an opportunity to become a $\pi$ (0) junction, following the adjustment of the impurity-superconductor coupling. However, when each superconductor has an embedded impurity, their effect on the phase transition tends to become weak. We believe that this work can be helpful in understanding the contribution of impurities to the Josephson phase transition.

通过考虑超导体中的量子杂质，我们模拟了它们对约瑟夫森结中相变的影响。发现超导体中的杂质可以对约瑟夫森相变产生不平凡的影响，并且它们能够促进或阻碍超导作用。$0\to \pi$相变现象。即，对于0（$\pi$）与一个杂质结，它有机会成为一个杂质 $\pi$（0）结，随后调整杂质-超导体耦合。但是，当每个超导体具有嵌入的杂质时，它们对相变的影响趋于变弱。我们认为这项工作有助于理解杂质对约瑟夫森相变的贡献。