This thesis focuses on the Taiwan Stock Market as the object aiming at discussing the impacts corporate basic information exerting on the bid-ask spread, realized spread and examining the effects the corporate basic information having on the market responses by the empirical researches under the conditions that centers on the liquidity of transaction costs, being divided by the stock market exchange hours in Taiwan Stock Exchange, taking advantages of corporate basic information. According to the empirical research results, the relative small-sized companies bear higher transaction costs compared with those larger ones and there are no significant differences with respect to spread during different corporate stages.