The purpose is to analyze and evaluate the application advantages of three-dimensional measurement technology in the calculation of surface area and volume of food contact materials compared with the commonly used manual measurement methods. The surface area of 7 kinds of common food contact materials are measured by three-dimensional measurement technology and manual measurement technology respectively. Each sample is measured six times in parallel, and the accuracy and precision of the two methods are compared. The result shows that the accuracy of three-dimensional measurement technology is better with precision between 0.0134%-1.63%. The precision of manual measurement results is between 0.748%-3.04%, which is significantly worse than the result of three-dimensional measurement technology. Manual measurement technology has the disadvantages of uncertainty of measurement method, large measurement deviation and difficult measurement. Three-dimensional measurement technology has advantages of simple operation, high stability and wide applicability, has a wide application prospect.