Abstract: With the development of power system, the requirements for fire safety performance of cables are constantly increasing. Fire safety performance of flexible fire-resistant cables were developed, mainstream fireresistant cable implementation standards and fire-resistant test methods were compared, and providing a theoretical basis for subsequent research. Next, internal temperature, high-temperature insulation resistance, internal pressure, fire-resistant cable current carrying capacity, and cable surface temperature during the fire resistance test of flexible fire-resistant cables were studied and compared. Based on the comprehensive research results, targeted suggestions are proposed to improve the fire safety performance of flexible fire-resistant cables, providing reference for cable design and selection.