Abstract: In the report， at first， the two types of corrosion test methods of steel in the laboratory environment and natural environment were summarized and classified， and the characteristics， application scope， advantages and disadvantages of different test methods were illustrated. The corrosion mechanisms of steel under electrochemical， chemical， and biological actions are expounded. Two measuring methods of the corrosion rate of steel， electrochemical method and weight loss method， and their mutual correction relationship were sorted out. The changes and effects of the morphology， products and mechanical properties of cosseted steel were analyzed. The steel corrosion prediction models， time-varying model， gray model， and BP neural networks model， were summarized. The anticorrosion measures， such as coating protection， electrochemical protection， and corrosion inhibitor， were introduced. Finally， the research status and progresses of steel corrosion behavior were summarized， which aimed at giving a useful reference for further systematic research.