Abstract: Aiming at the problems of low milling efficiency, low machining precision and high manual labor intensity of the outer frame of passive European-style wood windows, a double end milling machining center for passive European-style wood windows was designed and used for high-efficiency and high-precision milling of the outer frame of passive European-style wood windows. Through the analysis of the milling process of wood windows, the detailed design of the machining center structure was carried out using computer-aided design methods. Solidworks software was used for three-dimensional modeling of the machining center, and finite element analysis software was used to analyze the strength and stiffness of the key support parts. Virtual experimental methods was used to verify the machining efficiency of the machining center. The results showed that the theoretical machining efficiency of the machining center was about 400 fans/day, compared with the manual machining efficiency of 350 fans/day, the efficiency was improved by 14.28%, and the maximum stress of the key support parts was far less than the permissible stress of the material, which met the requirements for use.