Abstract: Since low-frequency sound waves have longer wavelengths and are penetrating and difficult to attenuate, they can easily bypass obstacles, so excluding the interference of low-frequency sound waves has been a major problem in acoustics research. In order to achieve effective absorption of low-frequency waves and solve the problem of noise pollution that is common in modern production and life, this paper uses COMSOL finite element software to study and design a two-dimensional three-component local resonance type metamaterial model based on acoustic metamaterials, and conducts research on the sound insulation effect of metamaterial models with different frequencies, different thicknesses and different shapes and structures. The simulation experimental results verify that the model can achieve the absorption of low-frequency sound waves, effectively reducing low-frequency broadband noise in the frequency range of 20～3 000 Hz, the maximum acoustic attenuation of 30 dB can be obtained, this thus achieves a good low-frequency sound insulation effect, this research has good realistic value and development space for the development of acoustics, and provides more possibilities for the high demand of vibration and noise reduction in civil and military fields. It can be used to screen many different applications.