On regular highway reconnaissance work,the tangent offset method is the most common one on highway route center stake layout,but this method is limited because of route tangent as baseline for offset.

The principle of offset method of setting out of curve using optimized direction and the method of direction optimizing are discussed in this paper and some formulas and their examples are given below.

A set of formula and method is derived and statement to survey curve with chord offset method by comparing three methods.

The application of field layout in mountain highway plane curve by the baseline offset method;

The setting of road shape instruction along highway in mountain area was discussed using tangent offset method in road survey.

By combining with example of the construction line-putting of Xiqu Fen river Bridge in Gujiao city,the paper introduces two kinds of curve coordinate calculation method,that is tangent offset method and the center declination method,according to comparison analysis and chooses a new method,center declination method which is easier to operate than the tangent offset method and makes less mistakes.