It is undeniable that there exists uncertain factors weakening the trade effects on China of China-ASEAN FTA such as barriers except for tariff; competition in the substitutes between China and ASEAN members, competition from other countries signing FTA agreements with ASEAN members in ASEAN market. The uncertain factors should not be ignored. And CAFTA has been called a potential “counterforce to the US and Europe” and also a building block towards a pan-Asian FTA.