There has been no clear and unified definition of the regulatory object of the foreign investment law,while the reconstruction of the foreign investment law system has been the popular topic in China.This paper first gives a general definition of regulatory object in the present system,and then in contrast to the regulatory object of the civil law and other domestic economic law departments,this paper gives a new definition of the connotation of the regulatory object of the foreign investment law.Further,after a review of the other countries' regulatory object,this paper demonstrates the specific range of constitution of the regulatory object.