The tangent of parabola and straight line in junior high school mathematics is explained as follows: the tangent of parabola and straight line means that parabola and straight line have an intersection point, and this intersection point has only one intersection point. It means that there is only one intersection point between parabola and straight line. When it comes to solving problems, it should be noted that parabola and straight line have only one thing in common. The abscissa and ordinate of this common point are parabolic and straight.