At present, the measures of national security review adopted by some countries have posed serious limitation on normal international investment activities and have become factual investment protectionism. Foreign investors can initiate international investment arbitration procedure to relieve themselves of national security reviews adopted by the host countries by applying fair and equitable treatment, indirect expropriation and transparency clauses in the related international investment treaties. China should pay attention to the coordination with relevant international investment treaties when constructing the legal system of foreign investment security review and implement prudently security measures for foreign investment to prevent possible prosecution by foreign investors under the international investment arbitration mechanism.