According to the service life of offshore platforms and relevant laws and regulations,the status of offshore platform dismantlement at home and abroad is introduced,and the market prospect of offshore platform dismantlement is analyzed.Taken the typical four-legged simple jacket platform in the offshore platforms as the research object,the flow and precautions of dismantlement operation are expounded,and the common cutting technologies of jacket platforms are compared,so as to provide reference for the dismantlement operation of offshore platform of relevant enterprises.