我们知道,圆锥曲线有许多相同或相类似的性质,特别是定点、定值、定线等问题,是历年高考的重点与热点之一,虽然有些考题并非直接考查这些性质,但会从这些性质的某一侧面出发,多角度、多方位地编拟试题,因此,平时教学时,适当引导学生展开?索与研究是很有必要的,圆锥曲线有些结论很美妙,且有“家族现象”.下面笔者就将有心圆锥曲线的一个共性展开探究,供读者参考与欣赏. We know that there are many similar or similar characteristics of conic curves, especially the fixed point, fixed value, alignment and so on. It is one of the focuses and hot points of the college entrance examination over the years. Although some examinations do not examine these properties directly, Therefore, in normal teaching, it is necessary to guide the students to start properly. Cable and research is very necessary. Some conclusions of the conic curve are very wonderful, and there are "family phenomenon The following author will be interested in a common conic curve to explore, for readers reference and appreciation.