Research conclusions: The influence of the stability by the collar beam for the double-shaft and thin-wall high-rise pier is preliminarily given; the collar-beam is making a larger contribution to the straight forward stability for the bridge, and has little effect for the lateral stability; increasing the collar-beam between the thin-wall piers , the contribution for the stability comes to the stabilization. The collar-beam between the thin-wall piers is effectively increasing the stability for the double-shaft and thin-wall high-rise pier bridge, but after a certain extent, increasing the numbers of the collar-beam is not apparent.