We present the Suzaku results of the supernova remnant ( SNR ) G346.6 - 0.2 .
The X-ray emission has a center-filled morphology with the size of 6 ^ { \prime } \times 8 ^ { \prime } within the radio shell .
Neither an ionization equilibrium nor non-equilibrium ( ionizing ) plasma can reproduce the spectra remaining shoulder-like residuals in the 2–4 keV band .
These structures are possibly due to recombination of free electrons to the K-shell of He-like Si and S. The X-ray spectra are well fitted with a plasma model in a recombination dominant phase .
We propose that the plasma was in nearly full ionized state at high temperature of \sim 5 keV , then the plasma changed to a recombining phase due to selective cooling of electrons to lower temperature of \sim 0.3 keV .
G346.6 - 0.2 would be in an epoch of the recombining phase .