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The thunders and lightning occur in the geospace and thus have obvious spatiotemporal characters. It is very useful to analyze the spatial and temporal distribution characteristics of the lightning data with the support of the GIS platform. The visual map component for lightning data (thunder map) is designed and developed to realize the visual display and analysis of various lightning data on the GIS platform, based on the ArcEngine SDK in ArcGIS, one of the mainstream GIS software to implement this component and divided the structure into three logical layers (data definition layer, data function layer, and map UI layer). A case to illustrate successfully the application of this component is given.