针对反坦克导弹舵机舵片在２３００℃高温、２马赫高速高能粒子冲刷的服役条件下出现的烧蚀问题，分析了舵片失效的原因，提出了用化学热处理手段提高其抗烧蚀性能的途径．经推力台点火实测、理化分析表明：采用化学热处理方法是提高反坦克导弹舵机舵片抗烧蚀性的有效手段之一． Aiming at the ablation problem of anti-tank missile rudder blade under service condition of 2300 ℃ high temperature and 2 Mach high-energy particle washout, the reason of failure of rudder blade is analyzed, and its anti-ablation performance is raised by means of chemical heat treatment way. After the ignition of the thrust platform, the physical and chemical analysis shows that the use of chemical heat treatment is one of the effective ways to improve the ablation resistance of anti-tank missile steering gear.