The invention discloses an implementing method for front vehicle following. The implementing method comprises the following steps of expressing following characteristics of vehicle distance control on a phase plane plot, wherein the transverse axis is the relative distance R of the two vehicles, and the vertical axis is the relative speed V of the two vehicles; adopting a straight line and curve combining method to determine an ideal target following characteristic curve in the phase plane plot; setting an ideal working point and a relatively ideal working point on the phase plane plot; adjusting the relative distance of the two vehicles in the front vehicle following way to approximate to the amplitude Ra; in the initial phase when the Ra is not reached, adopting the fixed acceleration and deceleration to approximate to the vehicle distance of the ideal working point; in the adjusting phase after the Ra is reached, reducing an accelerator or braking to reach the ideal working point, wherein the ideal working point is that the relative speed of the two vehicles is zero and the relative distance of the two vehicles is the ideal and safe vehicle distance set by a driver. The implementing method for the front vehicle following is applied into a vehicle cruising control system, so the comfortability and safety of the vehicle cruising control system are improved, and the easiness in accepting by the driver is realized.