The value range of m was originally an integer between (3,8). Later, in the third question, it is required that a point on the parabola and AB form an isosceles triangle with AB as the base, then his limit situation is that the parabola moves upward and the perpendicular line of AB wants to cut. By calculating the existence equation, the two equations are the median vertical line of AB and the parabolic equation after moving. The calculated range of m is two integer values of 4 and 5.