With the rapid development of science and technology across the country, the application of aspherics in practice is becoming increasingly widespread, and even becoming one of the important optical components in certain optical systems. Aspheric mirrors can correct aberrations in application systems, improve the imaging quality of equipment, and simplify the system structure. As a result, users have increasingly high requirements for the accuracy of the workpiece surface. Currently, how to ensure efficient and high-quality processing of aspheric components has become a key research topic. However, the research on the machining accuracy of dual spindle machining machines is not yet in-depth. This article is based on dual spindle aspheric machining machines and conducts relevant research on error analysis and detection.