Thermal-hydraulic design and analysis for the new conceptual design of fusion-fission breeding reactor using casing pipes for fuel assembly was done. Based on typical thermal-hydraulic design parameters, preliminary thermal-hydraulic design for the blanket was proposed. The corresponding temperature distribution and pressure distribution were obtained using thermal-hydraulic codes, CFX. The simulation results showed that maximum temperature of the materials were all below their corresponding temperature limits, coolant temperature at the outlet was higher than 773℃, and pressure drop of the coolant could satisfy engineering requirement. The reasonability of this thermal-hydraulic design was preliminarily verified.%对新提出的套管结构聚变-快裂变增殖堆包层概念设计方案进行了热工水力学分析和设计，给出了典型的热工设计参数，并结合大型热工水力学软件CFX对其进行了温度场和压力分布的模拟分析。分析结果表明，材料温度均已低于许用温度，冷却剂出口温度高于773K，冷却剂压降也符合工程上的要求，初步验证了增殖堆包层设计的合理性。
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