Fusarium oxysporum f. sp. cubense tropical race 4 (FOC TR 4) poses a significant threat to the global banana industry. This pathogen has caused severe damage to cavendish cultivars in many countries such as Malaysia, Indonesia, South China, Philippines and Australia. To monitor the pest status of FOC TR 4 in Thailand, the detection survey on various banana cultivars was conducted throughout the country, especially in the areas adjacent to the border of Laos. In July 2019, FOC TR 4 was initially detected in confined cavendish banana farms in Chiang Rai province. An emergency action plan for the Foc TR4 was immediately established and implemented by DOA of Thailand. To avoid the spreading of this disease, the DOA’s Notification on the pest control areas according to the Plant Quarantine Act B.E.2507 and Amended, Section 17 was released as the official measures to control the movement of banana plant parts (fruit is not included) and enforce the eradication program in the infected areas. The surveys on infected banana plants have been continually performed in the pest control areas to ensure that the pest status of FOC TR 4 would soon be declared as absent.