3D printing technology has been widely used in industrial manufacturing,medical,aerospace and other fields due to its advantages of flexible manufacturing and personalized customization.Based on the analysis of factors affecting 3D printing accuracy,this research systematically elaborates on the sources and manifestations of errors in the 3D printing process,with a focus on key technologies such as high-precision equipment development,high-quality material application,intelligent process optimization,and precision detection compensation to improve printing accuracy.In response to the problem of error control in 3D printing,this research proposes corresponding optimization strategies from the perspectives of data-driven,real-time monitoring,and multi-source fusion,providing reference for improving 3D printing accuracy and promoting the progress of 3D printing technology.