In the regional electricity market of East China， the power company plays dual roles that are power purchaser and market organizer. This paper describes and implements an integrated technical scheme of bidding decision support system for power company， and its system functions， design principle and software framework are discussed. The practical key arithmetic and relevant solutions are presented by analyzing the market environment and comparing the current research. Aiming at the questions as variable demands at the market trial operation stage， the practical and applicable schemes that combine the system and MATLAB toolbox are presented.