  A new $\gamma$-ray supernova remnant (SNR) G206.9+2.3 is first reported in
this study, analyzing 12.4 years of observation data of the Fermi Large Area
Telescope (Fermi-LAT). Its $\gamma$-ray spatial distribution did not appear
extended feature. Its photon flux was (3.68$\pm$1.21) 10$^{-10}$ cm$^{-2}$
s$^{-1}$, and its power-law spectral index was 3.37$\pm$0.57 in the 0.8-500 GeV
energy band. By subtracting the background around the SNR G206.9+2.3 region, we
found that its TS values of the global fit from the four different energy bands
were greater than 9. We identify that this is a real $\gamma$-ray signal.
Furthermore, we found that its GeV spatial location was in good agreement with
that of its radio band. Its 12.4 years of the light curve (LC) did not exhibit
significant variability. We suggest that the new $\gamma$-ray source is a
likely counterpart to SNR G206.9+2.3.
