Wilson－θ法分为加速度未经过和经过 时刻动力平衡方程修正的Wilson－θ①法和Wilson－θ②法。Wilson－θ①法是无条件稳定的，而Wilson－θ②法不再是无条件稳定的。计算精度分析表明：Wilson－θ②法对计算精度的提高不明显；其稳定的范围和计算精度均小于线性加速度法，不宜采用。

There remain two kinds of Wilson-θ methods, namely, Wilson-θ ① and ② methods. In Wilson-θ ① method, the accelerations are not modified by the dynamic equilibrium equations at the time ; in Wilson-θ ② method, the accelerations are modified. The stability of Wilson-θ ① method is unconditional, but the stability of Wilson-θ ② method is not unconditional. The analysis of calculation precision shows: the accuracy improvement by Wilson-θ ② method is not significant, both the stability range and accuracy are less than the ones of the linear acceleration method, so Wilson-θ ② method wouldn't be adopted.