An airborne stable pod for high voltage electricity-line-cruising is described. Firstly， a high definition camera is adopted through a comparison of the pod stable precision effect of the imaging system with that of eye overview， according to the requirement of the high clarity image of line-cruising. Secondly， an analysis of stable precision of the stable pod is made according to the image development setting and eye overview. In order to attain stability of high precision， the vibration of helicopter is restrained by positive and passive oscillation reduction. The results of precision test show that the stable precision is better than 30μrad. Finally， an experiment on the stable pod in actual flight is carried out， and the results of which show that the quality of imaging is excellent and up to the requirement of electricity-line-cruising.