Traditional autonomous underwater vehicles（AUV）are mainly used to perform underwater intelligence collection，environmental monitoring，and underwater target detection and disposal，including military activities. In recent years，with the development of information technology and artificial intelligence，AUV industry has received increasing attention from various sectors，especially from the military of various countries，and has been rapidly developed and widely used. As an unmanned reconnaissance platform，AUVs have gradually broken through the conventional scale and developed towards large and extra-large types. The types and scales of payloads that can be carried have been significantly changed and improved. In this article，the current development status of large AUVs as reconnaissance equipment at home and abroad is introduced，then the ability construction of using large AUVs for surface reconnaissance is analyzed. After that，the development trend and key technologies that need to be addressed for carrying surface reconnaissance payloads on large AUVs are highlighted. It provides support for further enhancing and expanding AUV combat capabilities and fields.
