Have you ever experienced frustration while reviewing code, such as forgetting where you came from, unable to recall which parts you have reviewed, and having to revert multiple times to get a sense of the code's structure? Or have you struggled to analyze complex functions, requiring you to browse the code thoroughly to find the key calling chain? Similarly, have you found it challenging to identify which functions call a particular method, requiring you to painstakingly review all the calling relationships? To address these issues, I have developed a code visualization tool called Code Graph, a JetBrains plugin that enables users to visualize the calling relationships between code, making it easier and faster to read and understand code. Key features include code-graph dual linkage, code path highlighting, and powerful filtering capabilities. With Code Graph, you can quickly get a sense of the code's structure, identify which parts you have reviewed, and fine-tune your analysis. Code Graph is available for installation in the IntelliJ IDEA plugin marketplace, and is compatible with versions 2022.3 and later.