Abstract
The valuation of ordered IT project is an important part of IT project management, and valuation theory and practice is at the exploratory stage. The total valuation is one significant theory to achieve scientific valuation of ordered IT project, and it includes IT project life cycle valuation, entire-cost valuation and total factor valuation. According to the life cycle theory, valuation characteristics, cost composition and valuation demand of ordered IT project, the IT project life cycle valuation, entire-cost valuation and total factor valuation are researched and their meaning and content are raised.