This paper introduces the development and integration of Unmanned Blimp Aeromagnetic Acquisition System (UBAS).UBAS's platform is an unmanned blimp,which is equipped with excellent flight control,navigation system and high-precision aeromagnetic survey system.So it can implement unmanned operation,three-dimensional autonomous navigation along the designed flight route.Trial and practical application was carried out for UBAS.A comparison with aeromagnetic survey data completed in the past shows highly similar characteristics in the anomaly contour maps,which verifies the effectiveness of the system.The authors also used different scales and flight parameters in this project,and it is shown that UBAS' results highlighted more weak magnetic anomalies and details.UBAS provides a quick and efficient method for difficult exploration on the ground and small area of aeromagnetic survey.