Abstract: In order to meet the submission requirements of the new quota for laying tracks in railway engineering and improve the calculation efficiency of engineering quantity, useing Visual Studio platform and C# language, this paper designed and developed a software for calculating the quantity of railway track engineering based on the new quota of track laying. The software can implement the rapid input of interface data between different professions, automatic inspection and early warning of data, section area calculation for ballasttrack, calculation of engineering quantity, review and output of calcutataions. Compared with the existing plug-in of CAD, the difference of calculation results of software for sectional area of ballasttrack was about 6‰. The engineering quantity calculation results of the software were compared with the manual statistics, and the two were consistent, which verifieed the correctness of the software.