Abstract: To solve the problem of aircraft landing safety in the wet condition of the runway, the authors used the tire-water film-road surface finite element models as the basis and combined the skid resistance performance of the road surface with the risk assessment of skid resistance failure by means of a virtual prototype to quantitatively assess the risk of aircraft running off the runway. Furthermore, the equivalent adhesion coefficient was proposed, and the three-dimensional surface of "adhesion coefficient-slip rate" under different speeds and different water film states was drawn. Finally, taking the two runways as examples (length 3 600 m and 3 400 m), the risk level of aircraft rushing out of the runway under different water film states was calculated. When the runway was dry, the risk level of the aircraft to rush out of the runway was E, which means there is basically no possibility to rush out of the runway. When the thickness of the water film was 3 mm, the possibility of the aircraft rushing out of the runway rises sharply. Referring to the Federal Aviation Administration (FAA) standard, the risk level at this time was B. However, when calculating the braking distance of the aircraft, the thrust of the aircraft was not considered, therefore the calculation results are generally safe.