When the war progresses to the street fighting stage, there are various degrees of information blockage, and the commander cannot perceive the front-line situation on the battlefield fully and accurately. Aiming at the phenomenon that there is relatively little research on the situational awareness of street fighting in China at present, the relevant measures to solve the situational awareness of street fighting on the basis of cloud computing, data mining and machine learning technology are put forward: using data mining technology to build a situational information analysis system for street fighting and processing system, using machine learning technology to construct an intelligent prediction system, using cloud computing technology to construct a cloud service system and a portable situational awareness and display system. At the same time, the methods to strengthen the system security system and improve the technical performance are proposed. The system helps to perceive the street fighting situation and improve the efficiency of mission execution.