A noise reduction method for improving frequency-modulated continuous wave radar target detection, which method is applied to automotive electronic products. The method comprises: acquiring and processing an echo frequency-mixing signal of a radar, and generating an original data matrix (100); filtering the original data matrix by means of a two-dimensional self-adaptive filter (200); and processing the filtered original data matrix (300). In the method, the noise surrounding an effective target in an automotive radar signal is suppressed by means of a two-dimensional self-adaptive filter, and therefore, the contrast between a target amplitude and the surrounding noise amplitude is greatly improved in a distance Doppler image. By increasing such contrast, the ratio of a target signal power to a surrounding noise power is increased, such that a target detection method (such as a constant false alarm detection method) that takes the amplitude or power as a main feature can realize more effective detection of a radar echo weak target, thereby improving the detection rate.
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