Abstract: The specific surface area of cement affects the activity of cement, which is closely related tothe economic benefits of enterprises. Therefore , it is of critical significance to accurately and reliably de.tectthe specific surface area of cement. In this paper, through a detailed analysis of the factors influen-cing the deviation of the specific surface area of cement measured by the Boehrig method, it is found thatthe main factors influencing the test results include environment, equipment, materials , personnel, etc.The causes of the deviation of the output are analyzed, and corresponding solutions are proposed, hopingto provide reference for improving the reliability of the test results of specific surface area of cement.

Key words: specific surface area of cement, Boehrig method, influencing factors