Currently, integrating adjustable autonomy framework are increasingly involved in future warfighters in complex task environments. The adjustable autonomy system must know what the user is doing, what needs to be done in the present situation, and the comparative strengths for of the human and the system in each task. Towards reasoning the situation, we are working on situation reasoning in an integrating adjustable autonomy framework of unmanned surface platform. This article provides a summary of various related work, ranging from situation awareness to performance capacity level assessment and impact assessment. In the end, we use visualization to display the process of the situation reasoning.