In recent years,the corrosion problem of delayed coking devices has attracted more and more attention and has become a key factor affecting the safe operation of equipment.Corresponding anti-corrosion strategies should be formulated for different working environments and working conditions.In this paper,the causes of corrosion in the delayed coking unit are analyzed in detail,and then several protection strategies are proposed.It is hoped to provide some references for the delayed coking anti-corrosion work.