One of the most frequent occurrences we witness in our everyday lives is corrosion. We all must have noticed that some objects made of iron are covered with an orange or reddish-brown colored layer at some point in time. Rusting is a type of corrosion that occurs chemically and leads to the production of this coating. In general, it is a process through which a refined metals converted into more stable compounds such as metal oxides, metal sulfides and metal hydroxides. This is now a very challenging situation in the refinery industry. The major portion of the global economy is dependent on the oil and natural gas industry and billions of dollars is invested to reduce the corrosion in the refinery industry. In view of the above some methods or approaches must be adopted to prevent the corrosion. Corrosion resistant is suitable at a temperature of 1000C to prevent sweet corrosion and is stable and shows no technical issues but the performance of the corrosion resistant is limited with rise in the temperature. This is a critical issue to control the sweet corrosion in drilling operation, deeper wells at high temperature and pressure. Till now no such article or patent literature has been published on corrosion inhibitor. And for this reason, a thorough review on corrosion inhibitor at high temperature is very much important. In this review article the corrosion issues at different sectors have been presented. As well as, the sources of the corrosion problem and the corrosion resistant approaches such as engineering design, cathodic protection, the use of corrosion inhibitors and metal coating will be discussed.