  Spatial template is important to study the nearby supernova remnant (SNR).
For SNR G332.5-5.6, we report a gaussian disk with radius of about 1.06 degrees
to be a potential good spatial model in the gamma-ray band. Employing this new
gaussian disk, its GeV lightcurve shows a significant variability of about 7
sigma. The $\gamma$-ray observations of this SNR could be explained well either
by a leptonic model or a hadronic model, in which a flat spectrum for the
ejected electrons/protons.
