To constrain the microscale redistribution behavior of volatile components, with S as the main focus, under transient thermal events on the lunar surface, this study employed atom probe tomography (APT) to perform three-dimensional nano- to atomic-scale characterization of a microregion on the surface of a Chang'e-6 lunar soil glass bead. The results show that this microregion is dominated by heterogeneous silicate glass enriched in O, Si, and Al. A columnar microstructural discontinuity was identified within the glass matrix. Across this structure, the concentrations of major elements remain broadly continuous, whereas the trace element S shows local depleted in its core. Meanwhile, density isosurfaces extracted from multiple major elements in this region all show similar columnar structures, which are attributed to local electric-field distortion induced by the physical interface and to trajectory overlap effects during APT analysis. Taken together, these chemical distribution characteristics and physical imaging effects indicate that this structure is not a phase boundary formed by chemical differentiation, but is more likely a microscale physical defect related to local thermal-event modification. The local depletion of S may reflect the redistribution of volatile components, with S being the main focus of this study. These results provide atomic-scale observational constraints on the local distribution of trace volatile components in lunar soil and their relationship with microstructures.