通过解析分析，对预测含间隙平面连杆机构运动副元素分离的方法进行了改进，指出了原方法的不足之处。改进后的预测方法的精确性和稳定性都大为提高，使得对平面连杆机构运动副元素分离的预测更准确有效。 By means of analytic analysis, the method of predicting the separation of kinematic pair elements in the plane-gap linkage mechanism with clearance is improved, and the shortcomings of the original method are pointed out. The accuracy and stability of the improved prediction method are greatly improved, which makes the prediction of motion element separation of planar linkage more accurate and effective.