Abstract:Sanitary and Phytosanitary Measures(SPS) are main barrier in China’s agricultural product export after China joined WTO,while aquatic product is the biggest export category among China’s agricultural products.Based on the status quo of aquatic product export,this paper analyzed the influencing mechanism of SPS on aquatic products.The results showed that increasing control standard of SPS raised the market accession threshold so as to ban trade or trade restrict,the increase in testing and certification items enhances the cost and reduces the profit which will lead to the withdrawal of enterprises.The spread and magnification of negative SPS news will cause trade ban and restrict for a long time and in large scale.This paper finally put forward some countermeasures that relevant standard should be amended in China,early warning mechanism should be established,“From Pond to Table”monitoring system should be set up and competitiveness of quality and safety should be enhanced in order to reduce the negative effects of SPS measures.