In the parachute high-speed airdrop test， the parachute is affected by the attitude of the dummy while doing non-uniform acceleration and unsteady motion. The parachute opening dynamic load data obtained from the conventional airdrop test are often discrete， which can not truly reflect the parachute opening performance. According to the influence characteristics of the front body of the parachute， this paper proposes a method of adding a stable parachute to control the attitude of the dummy in the free flight stage， and the motion process of dummy under different working conditions is simulated and analyzed. By using airdrop test of three working conditions， this paper researches the dummy attitude effect on opening shock of parachute， and analyses the test data to obtain the relationship between dummy attitude and opening time， opening speed， opening shock， opening speed loss of parachute， dummy angular velocity. The results show that dummy attitude control does not affect the parachute opening procedure. Compared with the situation without controlling dummy attitude， it is closer to the actual parachute opening procedure in front body for this type life-saving parachute. Based on the results analysis， it is concluded that dummy attitude control can improve the discreteness and the validity of opening shock data， and the maximum parachute opening shock data can be reduced by 8.9%.