The main span of the Nanpanjiang Bridge adopts partial prestressed concrete con?tinuous beam with V 一 type supportings. This is a first example to railway bridge of our country. This paper discusses the building plan on V —type supportings of this bridge, as well as emphatically points out the methods which ensure stability of structures hanged at the top of the high piers and solves the problems on the support during working in high—al?titude and the scaffold for operation during construction.