This study analyzes the spatial-temporal characteristics and influencing factors of sensible heat flux based on data observed by the Large Aperture Scintillometer (LAS) from April 2018 to April 2019 in Pancheng town.The results indicate the following:1) In the town,the sensible heat flux exhibits a unimodal diurnal variation pattern,significantly larger during the daytime compared to the nighttime.The sensible heat flux is significantly higher on clear days than on cloudy days and slightly lower at night compared to cloudy days.The average hourly sensible heat flux ranges between 2.25—200.53 W·m^-2 and 13.10—132.52 W·m^-2 for clear and cloudy days,respectively.2) The sensible heat flux is significantly higher in summer than in winter.In August,the values during the daytime and at night are 112.19 and 23.54 W·m^-2,respectively.In February,the values during the daytime and at night are 35.57 and 11.57 W·m^-2,respectively.3) On clear days with inflows from different directions,notable differences in sensible heat fluxes are observed in the town.As the proportion of impervious layers increases,the proportion of net radiation allocated to sensible heat fluxes also increases significantly.When the proportion exceeds 60％,the upward trend becomes less evident.4) Using the Monin-Obukhov length as a criterion for judging atmospheric stability,the C²_n method exhibits a low misjudgment rate among the five methods when using LAS data,making it a more suitable method for determining atmospheric stability at night in the town.5) Among the surface parameters affecting sensible heat flux,changes in effective height have the greatest impact.Changes in wind speed have a larger effect,especially in autumn and winter.The change in Bowen's ratio has a minor effect,while the effects of changes in temperature,roughness length,and displacement height are negligible.