Information technique,espcialling network technique on the development and application in the manufacturing firms,has made working activity of them from innner data processing to resource's controlment and management(united) by time and space gradually.Financing information in the firm is the foremost managing information,and how to manage the financing systems of ecedemic branch organizations of the firms compositively in the network environment is a crucial subject.This paper gives a supporting web-based system of finacial management,establishes the sturcture of this system and researches the key techinique on system exploit and inner financial system of firm based the need of finacial management in the most of firms when they place branch organization in different place.At last,the authors certificate this system effective and pratical through the real examples.