A task maximum stacking depth detection method based on list files includes the steps that firstly, the list files are analyzed, the sizes of stacks distributed to functions are extracted, and a final function call relational tree of the task inlet functions and the interrupt inlet functions is generated; according to the sizes of the stacks distributed to the functions and the final function call relational tree of the task inlet functions and the interrupt inlet functions, the maximum stack depth of tasks is detected through a recursive method. According to the task maximum stacking depth detection method, the maximum stack depth of the tasks can be accurately acquired, and the problem that the maximum stack depth often cannot be detected through a dynamic analysis method is solved.