Abstract: Utilizing a theory of artificial nerve net and BP net to predict and judge oil & gas pipeline and equipment can avoid the problem of finding various factors regularly effecting on their corrosion and predict and judge corrosion statue on each oil & gas pipeline and equipment. When the theory is applied in analysis of a pipeline's corrosion statue in China petroleum Huabei oil field, it is shown that the artificial nerve net can successfully predict and judge the corrosion of pipeline in oil & gas field and equipment.