The CCAMLR System of Inspection has been in place for more than 30 years, but its implementation and impact have yet to be summarised and analysed. The purpose of the research is to clarify the legal basis, analyse the implementation and make suggestions for further improvements. By analysing the CAMLR Convention and historical files, the System of Inspection has been further improved and many details have been added based on some international fisheries agreements and domestic laws regulating fisheries. Article XXIV of the CAMLR Convention, various Conservation Measures and documents form the legal basis of the System of Inspection. The System is divided into two types, namely At-sea inspection and Port inspection. Combined with the annual reports of CCAMLR meetings over the past 30 years, the System has become relatively complete as a “Compliance Monitoring Mechanism” under the CCAMLR Compliance Evaluation Procedure with other monitoring, control and surveillance (MCS) tools. However, inspection data have not been stable over the years. Since 2017, the increase in catches has not led to an increase in the number of inspections in the annual reports. In addition, At-sea inspections do not cover all Subareas of the Convention. At present, the objects of inspection have been extended to Non-Member vessels, so that it should also be sanctioned through various mechanisms. In addition, the System of Inspection is different from the Compliance Evaluation Procedure and the relationship between the two needs to be confirmed in practice. Due to the change in inspection methods, the lack of inspection data and the increase in other MCS tools, At-sea inspection does not cover all Subareas of the Convention. The System of Inspection is constantly being practised and improved. The study calls on Members to continue to carry out inspections and to improve the System in order to achieve the conservation and rational use of fishery resources.