运用生物力学测试手段对１０８ｋｇ以上级、国家健将级举重运动员姜凯的抓举动作进行分析，找出受试者抓举动作的主要问题是：１）在伸腿前俯和引膝提铃阶段伸腿不充分，使腿部力量没能很好地发挥出来；２）由于髋关节在引膝提铃阶段过早用力，使得伸膝范围受到限制，腰背力量不能完全发挥。并针对受试者的问题提出改进办法，已取得了一定成绩。 Using biomechanical test means to analyze the snatch motion of 108kg and above national champion Jiangqijiang weightlifterKiang Kai to find out the main problems of the subject’s snatch: 1) , So that the strength of the legs did not play out well; 2) due to premature hip pull in the stage of pulling the bell force, making knee extensor range is limited, the power of the lower back can not be fully realized. Some suggestions have been put forward for improvement of the subjects’ problems.