  We have performed magnetotransport measurements in CeTe$_{3}$ thin films down
to $0.2~{\rm K}$. It is known that CeTe$_{3}$ has two magnetic transitions at
$T_{\rm N1} \approx 3~{\rm K}$ and $T_{\rm N2} \approx 1~{\rm K}$. A clear
Shubnikov-de-Haas (SdH) oscillation was observed at $4~{\rm K}$, demonstrating
the strong two-dimensional nature in this material. Below $T_{\rm N2}$, the SdH
oscillation has two frequencies, indicating that the Fermi surface could be
slightly modulated due to the second magnetic transition. We also observed a
magnetic hysteresis in the SdH oscillation below $T_{\rm N1}$. Especially,
there is a unique spike in the magnetoresistance at $B \approx 0.6~{\rm T}$
only when the magnetic field is swept from a high enough field (more than
$2~{\rm T}$) to zero field.
