In this paper，we propose a color image denoising algorithm based on the second generation Bandelet transform to aim at the latest development of the characteristics of the Bandelet transform. The algorithm takes full advantage of the inherent geometry regularity of color images, gets the optimization expression, sets the threshold using noise intensity, and realizes color image denoising using the softthreshold function. The experimental results in the MATLAB tool show that the color image processed by this algorithm improves more effectively than wavelet and the first generation Bandelet algorithm both in subjective visual and objective quality targets.