The thermochromic windows based on vanadium dioxide (VO2) can intelligently modulate the transmittance of indoor solar radiation, which is significant for reducing building energy consumption. However, conventional thermochromic windows only have the ability of single spectral modulation, continuously switching the solar spectral transmittance in response to varying ambient temperature on a window is challenging. In this work, a SiO2-VO2-PDMS-driven by mechano-thermochromism intelligent optical management system was proposed for automatic switching and continuous adjustment of the solar spectral transmittance. Compared with the single-layer VO2 film, the SiO2-VO2 double-layer thermochromic window provides a gradual refractive index change from the top with nair = 1 to the middle with around 1.5, and then to the bottom with a higher refractive index, which suppresses reflections over a wider wavelength range. The results show that the SiO2-VO2 double-layer coating with a refractive index buffer layer exhibits improved optical performance with a solar modulation ability (ΔTsol) of 18.4% and an average luminous transmittance (Tlum,avg) of 49.1%. Furthermore, the design can achieve increases in the stretch-related solar modulation ability (ΔTsol,stretch) and the stretch-related luminous transmittance (Tlum,stretch) from 18.4% to 43.8% and 49.1% to 60.5%, respectively, which is realized by the deformation of polydimethylsiloxane (PDMS). Combining elastic stretching with thermochromic windows can dynamically modulate the solar spectral transmittance to improve thermal comfort. This work provides a promising approach to improve the industrial application of VO2 thermochromic windows, contributing to the advancement of research in green buildings, window design, and automotive energy efficiency.