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All-optical magnetization switching with features of low-power consumption and high writing speed is a promising road map to satisfy the demand for volume data storage.To promote denser and faster magnetic recording technologies,herein,all-optical helicity-dependent switching (AO-HDS) in multi-layer magnetic recording is proposed based on the chromatic aberration of an optical lens (Thorlabs's N-BK7 plano-convex uncoated lens).The power of the incident beams and the thickness of the multi-layer magnetic recording film are designed carefully.Besides,the uniformity of this multi-layer magnetic recording is optimized.At last,a prototype system of information multiplexing based on this multi-layer magnetic recording technology is constructed as well.Flexible and controllable magnetization reversals in different layers are also demonstrated by tuning the wavelength and helicity of working beams.We believe that such a prototype system can pave the way for increasing the storage density in an effective and low-cost mode.