简要介绍了垂直升船机提升机构的常用型式，探讨了卷扬全平衡式升船机承船厢的稳定性。从力系平衡原理导出船厢失稳条件的计算式，并与模型试验进行了对比。 The common types of lifting mechanism of vertical shiplift are briefly introduced, and the stability of the load-bearing cabin of hoist full balance shiplift is discussed. Based on the balance principle of force system, the formula of instability of cabin is derived and compared with the model test.