Abstract The steel industry has been known as 'The mother of all industries '. With the emerging incidents such as Asian financial meltdown, industrialization of the China, and the policy of macro economic controls by the China government, the stock index of the steel industry has fluctuated violently. Despite the economy of China is to be adjusted upwards, in the foreseen future, the global steel supply will be probably exceed the demand. Such phenomenon definitely causes the pressure on the market that it also attracts much attention of the relevant stockholders. Current research investigates the most suitable model for valuating the stock price of the steel industry that would provide valuating methods to the corporate management and investors for decision making and investment. This research has studied 19 companies of steel industry of Taiwan listing companies with 6 approaches including the ¡¥Discounted Free Cash Flow Models¡¦, ¡¥Price to Earning Ratio¡¦, ¡¥Price to EBITDA Ratio¡¦, ¡¥Price to Sales Ratio¡¦, ¡¥Price to Book Value Ratio¡¦ and ¡¥Edwards-Bell-Ohlson Model¡¦ to valuate their reasonable intrinsic value from 2000 to 2005. The test of Theil¡¦s U is then applied to evaluate the approaches in order to justify the best valuation model. This study indicates the following results¡GThe Price to Book Value Ratio is the best valuation model since its smallest Theil¡¦s U value. The Price to Earning Ratio is the most unsuitable model for this evaluation purpose with a highest Theil¡¦s U value.