Abstract: Technological calculation in a hilly multiphase pipe flow includes flow pattern prediction, liquid holdup and pressure drop calculation and temperature prediction. At present, softwares to predict slug flow characteristic parameters are very less. PIPEPHASE and Xi'an Jiaotong University's slug flow softwares have more disadvantages. Based on this two softwares, a slug software that has better interface and can operate on the Windows desktop has been developed. This software can calculate from beginning or ending, It provides three calculation models for choosing and ran get all slug flow characteristic parameters. It offers liquid holdup, pressure drop and temperature curve maps.