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A significant excess of the stellar mass density at high redshift has beendiscovered from the early data release of James Webb Space Telescope($\it{JWST}$), and it may require a high star formation efficiency. However,this will lead to large number density of ionizing photons in the epoch ofreionization (EoR), so that the reionization history will be changed, which canarise tension with the current EoR observations. Warm dark matter (WDM), viathe free streaming effect, can suppress the formation of small-scale structureas well as low-mass galaxies. This provides an effective way to decrease theionizing photons when considering a large star formation efficiency in high-$z$massive galaxies without altering the cosmic reionization history. On the otherhand, the constraints on the properties of warm dark matter can be derived fromthe $\it JWST$ observations. In this work, we study WDM as a possible solutionto reconcile the $\it JWST$ stellar mass density of high-$z$ massive galaxiesand reionization history. We find that, the $\it JWST$ high-$z$ comovingcumulative stellar mass density alone has no significant preference for eitherCDM or WDM model. But using the observational data of other stellar massdensity measurements and reionization history, we obtain that the WDM particlemass with $m_{\text{W}} = 0.51^{+0.22}_{-0.12}$ keV and star formationefficiency parameter $f_{*}^0>0.39$ in 2$\sigma$ confidence level can matchboth the $\it JWST$ high-$z$ comoving cumulative stellar mass density and thereionization history.

Implications of the Stellar Mass Density of High-$z$ Massive Galaxies from JWST on Warm Dark Matter