Abstract: Conventional methods processing high acid crude cause serious corrosion problems on atmosphere and vacuum distillation unit. A new technology that the high acid crude is directly processed by FCC is developed to avoid these problems. Two kinds of commercial trial solutions were implemented: one is the blending feed of vacuum gas oil and acid crude; another is the only acid crude used as FCC feed directly. The commercial results show that the qualities for the two feeds after desalting and dewatering can meet the FCC feed requirements of sodium and water content. The perfect FCC product distribution can be obtained and deacidification is over 99% in both cases. The acidity or acid value of the product meet the standards or downstream process requirements. Processing the blending feed can obtain better benefits.