Confirming dumping is one of the most important issue in anti-dumping law.The fact of dumping is the premise for industrial loss and anti-dumping tax collecting.Confirming dumping involves three aspects: normal price,export price and the adjustment of the two prices.According to both WTO anti-dumping regulations and Chinese new anti-dumping laws,the normal price and export priceconfirming is discussed with further explanation of perfecting Chinese rules on confirming dumping,which may affect the anti-dumping law making positively.