Surat Thani Province Immigration Is a affiliated agency Immigration Office which has the mission and duty of inspecting permission for persons traveling into and out of the Kingdom by water and air, providing services and controlling and inspecting foreign persons while they are in the Kingdom until they travel out of the Kingdom as well as monitoring and supervising aliens who have the behavior of secretly escaping or coming to commit crimes within the Kingdom. 

Including those who provide assistance In order not to encroach on sovereignty and affect the maintenance of peace and order in society.