  MAXI J1348-630 is a low-mass X-ray black hole binary located in the Galaxy
and undergone the X-ray outburst in 2019. We analyzed the observation data in
very soft state during the outburst between MJD 58588 and MJD 58596 based on
the Insight-HXMT observations from 2 -- 20 keV via the continuum fitting method
to measure the spin of the stellar-mass black hole in MAXI J1348-630. The inner
disk temperature and the apparent inner disk radius were found to be $0.47\pm
0.01 \rm keV$ and $5.33\pm 0.10 \ R_{g}$ from the observation data modeled by
the multicolor disc blackbody model. Assuming the distance of the source $D\sim
3.4 \rm kpc$, the mass of the black hole $M\sim 11 \ M_{\odot}$, and the
inclination of the system $i\sim 29.2^{\circ}$, the spin is determined to be
$a_{\star}=0.41\pm 0.03$ for fixing hardening factor at 1.6 and
$n_{H}=8.6\times 10^{21} \rm cm^{-2}$. Besides, considering the uncertainty of
the parameters $D, M, i$ of this system, with the Monte Carlo analysis, we
still confirm the moderate spin of the black hole as
$a_{\star}=0.42^{+0.13}_{-0.50}$. Some spectral parameters (e.g., column
density and hardening factor) which could affect the measurements of the BH
spin are also briefly discussed.
