  Considering that the existence of relativistic particles in the protostellar
jet has been confirmed by the detection of linearly polarized radio emission
from the HH 80-81 jet, we search for gamma-rays from the HH 80-81 system using
ten-year {\it Fermi}-LAT observations. A significant point-like $\gamma$-ray
excess is found in the direction of the HH 80-81 system with Test-Statistic
(TS) value $>$100, which is likely produced in the HH 80-81 jet. The
$\gamma$-ray spectrum extends only to 1 GeV with a photon index of 3.5. No
significant variability is found in the gamma-ray emission. It is discussed
that the properties of HH 80-81 jet suffice for producing the observed
$\gamma$-rays.
