Bound states in the continuum (BICs) supported by dielectric metasurfaces have significantly propelled the progress in optical technologies, notably for manipulating potent light-matter interactions. However, achieving a robust quasi-BIC mode with high Q factor by adjusting geometric parameters remains a challenge, primarily the Q factors strongly depend on the asymmetric parameters and the stringent fabrication requirements. Here, we propose a novel strategy to enhance the robustness of the Q factor through the continuous excitation of the magnetic dipole mode with low energy loss. Through a specialized multi-cell structure, the nanoarrays can continuously excite the magnetic dipoles contributed by different structural components over a broad range of geometrical parameters, exhibiting exceptional robustness and high quality resonance. This work provides a theoretical scheme that offers new directions for obtaining robust high Q resonances and developing potential applications for high-performance optical devices.
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