Abstract: Finite element numerical computation is the most powerful and universal quantitative prediction method for sand production. In practical, the common problem is the result of sand production is not consistent with the production status of the field. In order to improve the prediction accuracy of sand production, based on years of experience, the authors summarized some essential processes to improve the prediction of sand production from four aspects i.e. indoor rock strength test, rock microstructure, rock failure criteria selection and the model correction. The application in some oil field in the west of the South China Sea demonstrates that the actual prediction accuracy of sand production is 80%, which provides an important basis for the optimization of sand control technology in the future.