In this work, we investigate the quantum phase transition of light in the dissipative Rabi-Hubbard lattice under the framework of the mean-field theory and quantum dressed master equation. The order parameter of photons in the low temperature and strong qubit-photon coupling regime is also derived analytically. Interestingly, it is able to locate the localization and delocalization phase transition very well in a wide parameter region. In the deep-strong qubit-photon coupling regime, the critical tunneling strength approaches zero regardless of the quantum dissipation, contrary to the previous results for the finite critical tunneling strength based on the standard Lindblad master equation.
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