Abstract: In order for quick and accurate EPC project valuation, a preliminary calculation model was set up based on the estimate budgetary method and traditional mature valuation methods. The calculation accuracy was further improved by the project break-downs and computer corrective index so as to set up the valuation methods for the similar EPC subdivisional works. As per the data statistics collected from the projects applied this method, 97. 5% of subdivisional works was under control and the problems like“lump sum”and“fixed total price”can be settled effectively.