Based on the analysis of the existing hydraulic pulsation attenuation method, a kind of elastic thin-walled cylinder hydraulic pulsation filter was designed. The mathematical model of the filter was established with the method of electro-hydraulic analogy. By using the MATLAB, its dynamic characteristics were simulated with analysis. The results show that the filter with a simple structure has not only a satisfactory result, but also a more wide attenuation range, no matter from low or to high frequency.