The invention discloses a method for extracting the frame center of a radar one-dimensional range profile of an intra-frame maximum similar profile. The intra-frame maximum similar profile is adoptedto serve as a frame center template, a certain original HRRP (High-Resolution Range Profile) training sample which has the maximum similarity with all other training samples within a certain frame isselected to serve as the frame center of the frame and replaces all training samples to serve as a template for training. The method not only finds a template which is the most capable of representingall training samples within the frame, but also keeps the primitiveness of template signals to the maximum extent, that is, artificial processing is not performed on the intra-frame maximum similar profile.