ImPlot3D is a 3D plotting extension library based on Dear ImGui, offering user-friendly and high-performance 3D plotting features. Inspired by ImPlot, it provides a familiar and intuitive API for developers who are accustomed to ImPlot. ImPlot3D supports various 3D plot types, such as line plots, scatter plots, and surface plots, and allows users to interactively rotate, pan, and zoom in on 3D graphics. Its significance lies in providing an ideal solution for applications requiring 3D data visualization, especially in scenarios where real-time performance is crucial.