As a key technology of the aircraft safety design and airworthiness certification, the research on the ignition source prevention based on fuel tank system is necessary. According to the relative FAA advisory circular,the ignition source prevention compliance means, requirements and design guide for 25. 981 regulations (amendment 25-102) are illuminated and the associated qualification test methods are also summed up. According to the continued airworthiness requirements of the ignition source prevention, the principle to prepare the continued airworthiness documents are also summarized.