Recently, China Customs has repeatedly detected the quarantine pest, Candidatus Liberibacter solanacearum, in imported plant seeds originating from Italy, the Republic of Korea and other countries. To prevent the introduction of the pathogenic bacterium and protect China’s agricultural production and ecological security, we decide to adopt phytosanitary measures in accordance with relevant laws, regulations and international standards for phytosanitary measures, including suspending the inspection and quarantine approval for import of plant propagation materials from certain countries and regions, conducting pre-export testing, requiring additional phytosanitary declarations and implementing port inspection, quarantine and epidemic monitoring.