Abstract: After signed, ECFA has great effect on the development of agricultural cooperation in both sides. Meanwhile, the mode has transferred from trades of agricultural products to investments of agricultural projects and resource exploitation. However, because of the causes of history and reality, there is a wide range of problems and barriers in the trades of agricultural products and the agricultural cooperation. For example, the amount of inventory is excessively low and the balance between the trades in mainland and Taiwan has been broken. Unequal access also has some problems. It actually makes restrictions on the prospects of agricultural cooperation. The access in agricultural cooperation in both sides can gradually transfer from ECFA to WTO roles. If ECFA enlarge the scope of implementation, it will broke the imbalance between the agricultural cooperation in both sides of the Taiwan Straits, exploiting the space in the future of agricultural cooperation in both sides of the Taiwan Straits.