The invention discloses a method for eliminating noise in millimeter wave biological radar voice. After an acquired millimeter wave radar voice signal is subjected to empirical mode decomposition, the method, on the basis of analysis of noise content in an intrinsic mode function, de-noises a high-frequency part, a intermediate-frequency part, and a low-frequency part by using an adaptive threshold according to the characteristics of the noise distribution in the intrinsic mode function so as to eliminate the noise content in the voice in a targeted way based on the amount of the noise content, has strong adaptability and effectiveness, in particular can well retain detail information of the voice, and contributes to a significant improvement in radar voice quality. An example using the method shows that the targeted empirical mode decomposition method can effectively eliminate the noise content in the millimeter wave radar voice. Compared with a conventional voice enhancement method, the method has strong adaptability and can significantly improve voice intelligibility on the basis of eliminating the noise content in the radar voice.