National security ensures an ordered society. However, foreign investment has posed a variety of possible threats to China’s national security in recent years. Although the Measures for the Security Review of Foreign Investment has contained other foreign investment approaches which shall be subject to the national security review in a miscellaneous provision, the issue of how to operate the national security review towards foreign contractual control model in reality requires further discussions. In practice, the Office of Foreign Investment Working Mechanism is suggested to make a specific business list of contractual controlled companies that involve in key, sensitive data and information. Besides, the non-wholly-owned return contractual controlled companies of Chinese investors should be the key part under national security review. Also, actual conclusion of controlling contracts shall be deemed as the boundary of investment behaviour that indicates party’s voluntary declaration obligations.