The technique of extracting isolated target micromotion feature has already been comparative mature in recent years, but the technique of extracting group targets micromotion feature remains to be further studied. Taking space autorotation micromotion as example, a resolution scheme of group targets based on sinusoidal frequency modulation Fourier transform (SFMFT) is proposed in this paper. First, an echo model of group targets with spinning micromotion is established, and SFMFT is applied in extracting microDoppler component on the basis of the above mentioned. Then, a suppression method of crossterm in SFMFT is put forward in view of the problem that the sinusoidal frequency modulation Fourier transform (SFMFT) displays the characteristic crossterm in analyzing multicomponent sinusoidal frequency modulation signals. Finally, combined with the proposed crossterm suppression method, group targets with spinning micromotion are effectively resolved by utilizing the group targets with spinning micromotion signals of the sinusoidal frequency modulation Fourier transform, and the spinning frequency of each subtarget is accurately extracted.