  We take the JUNO experiment as an example to explore nuclearites in the
future large liquid scintillator detector. Comparing to the previous
calculations, the visible energy of nuclearites across the liquid scintillator
will be reestimated for the liquid scintillator based detector. Then the JUNO
sensitivities to the nuclearite flux are presented. It is found that the JUNO
projected sensitivities can be better than $7.7 \times 10^{-17} {\rm cm^{-2}
s^{-1} sr^{-1}}$ for the nuclearite mass $10^{15} \; {\rm GeV} \leq M \leq
10^{24}$ GeV and initial velocity $10^{-4} \leq \beta_0 \leq 10^{-1}$ with a 20
year running. Note that the JUNO will give the most stringent limits for
downgoing nuclearites with $1.6 \times 10^{13} \; {\rm GeV} \leq M \leq 4.0
\times 10^{15}$ GeV and a typical galactic velocity $\beta_0 = 10^{-3}$.
