  We study the timing properties of XTE J1858+034 using the Nuclear
Spectroscopic Telescope Array (NuSTAR) and Burst Alert Telescope onboard Swift
during the outburst in October--November 2019. We have investigated for
Quasi-Periodic Oscillation (QPO) during the outburst and detected a
low-frequency QPO at $\sim$196 mHz with $\sim$6% RMS variability from the
NuSTAR observation. The QPO is fitted and explained with the model - power law
and a Lorentzian component. We have also studied the variation of QPO frequency
with energy. The beat frequency model and Keplerian frequency model both are
suitable to explain the origin of the QPOs for the source. Regular pulsations
and QPOs are found to be stronger in high energy which suits the beat frequency
model. The variation of the hardness ratio is studied over the outburst which
does not show any significant variation.
