The invention discloses a reclaimed soil profile fine expression method taking the non-destructive detection technology of a ground penetrating radar as the main means to accurately and completely express the profile information of reconstructed soil in land reclamation. The method includes laying equidistant ground penetrating radar survey networks and obtaining the radar images of the reclaimed soil by means of a high-frequency ground penetrating radar system; establishing a filtering processing method based on morphology to weaken the interference of the clutter to the hierarchical information; and extracting of the hierarchical attributes of the reclaimed soil through the radar image processing and sampling channel energy gradient change. On this basis, a typical profile is excavated and is used as empirical data to be in comparative analysis with the layered condition of the corresponding radar image, and through the combination with the characteristics of layered soil, the fine expression of the soil profiles in the whole wore area can be realized, and a rapid method can be provided for the acceptance of land reclamation project quality.