In order to further understand the Late Cenozoic tectonic activities of the Minjiang River fault, this paper studies the river-valley landform, Cenozoic basins and planation surface in the source area of the Minjiang River so as to explain its neotectonic movement features. The results show that the valley landform is characterized by the alternating wide and narrow valleys. The source area developed three planation surfaces, which reflect strong neotectonic movement and significant landform differences.