Abstract: Industrial measurement and control equipment is the nerve center of an industrial control system, and thus, its information security is directly related to the safety of the industrial control system. The traditional security protection technology has limitations, such as the inability of the network to block the access of physical media transmission data and physical equipment. Even the physically isolated industrial measurement and control equipment can also become the target of attack. Therefore, it is urgent to enhance the endogenous security of industrial measurement and control equipment. According to related international and national standards, the endogenous information security technology of industrial measurement and control equipment is divided into static reinforcement and dynamic protection technologies. In this paper, seven kinds of information security technologies are classified logically. The definition of endogenous information security terminologies in industrial measurement and control equipment is presented, and the research progress of existing key technologies is analyzed and evaluated. Finally, we prospect the development trend of endogenous information security technology of industrial measurement and control equipment.