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拦网取位是组成有效拦网至关重要的因素，由于扣球的瞬间性，使目前常用的取位判断方法存在很大难度。根据４号位近网强攻不同入射角扣球过网区和攻手起跳位置与球体、球网构成的几何学关系，确立了外拦队员取位时，以右肩外缘参照攻手起跳时右肩外缘的基本原则，并在此基础上建立了拦四号位近网强攻取位参照值系统，再将这一理论值系统在训练和比赛中进行实验。经实验前后检验分析证明：拦四号位近网强攻取位参照值系统具有科学性、先进性和可行性。
Blocking block is an important factor in the formation of effective blocking, as the spiking instant, so that the current commonly used method to determine the existence of a great difficulty. According to the number 4 near-line storm at different angles of incidence of spiking over the net area and attack takeoff position and the ball, the net geometry of the relationship between the formation of the foreign players to take position, with the right shoulder outer edge takeoff attack And the outer edge of the right shoulder. On the basis of this, a reference value system of Barrier No. 4 near the net is established, and then the theoretical value system is tested in training and competition. The test before and after the test proved that: Block No. 4 near-net storm take reference system is scientific, advanced and viable.