In accordance with the relevant codes and standards,introduce quality control elements of offshore oil engineering steel structure fabrication various working procedures,including prophase bidding,risk analysis,technical clarification,inspection procedure,ITP,material inspection,fit up visual inspection,NDT,heat treatment post welding,on-site of hardness test,etc. Through analysis and explanation,summarize a set of methods about quality control method for offshore oil platform steel structural fabrication,it can be used as a reference for relevant enterprises to engage in offshore oil steel structure fabrication and explore relevant market.