  We report our analysis of the data obtained with the Large Area Telescope
(LAT) onboard the Fermi Gamma-ray Space Telescope (Fermi) for the SS 433/W50
region. The total data length is ten years. Different from the previous results
reported for this region (for which an old version of database was used), we
show that excess emission is detected around the w1 region in the western lobe
of the jets from SS 433. The region is bright at X-rays due to the interaction
between the jet and the ambient medium. This detection also matches well the
recent results of the very-high-energy detection of SS 433/W50 with the High
Altitude Water Cherenkov (HAWC). However, the eastern regions that are slightly
brighter in HAWC's observation are not detected in the Fermi data. Constructing
the broad-band spectral energy distribution (SED) for the western region, we
compare with the HAWC results for the eastern regions and discuss the possible
origin of the emission. A leptonic scenario can provide a fit to the Fermi GeV
spectrum and HAWC TeV detection, where the former and latter are due to the
synchrotron radiation and inverse-Compton process respectively. However, the
model can not explain the X-ray and radio emission from the region
simultaneously, which thus requires further observational and theoretical
studies of the region in order to clarify the reasons.
