[Objective] This paper studies the geomorphic types from the perspective of information entropy and adds new index for landscape evaluation in Loess Plateau. The terrain can be fitted and evaluated by calculating the information entropy on the elevation data, which can provide a new theoretical basis for studying geomorphology. [Methods] Through analyzing terrain profile of the study area, we extracted the terrain profile line, then used elevation data to calculate the section line information entropy and elevation for different physiognomy types. We rendered terrain profile section line map and terrain information entropy diagram, and used them to test and evaluate the effect of geomorphic information entropy in expressing terrain information, and to calculate the index of dispersion degree, and to find the correlation between them through linear fitting. [Results] With a comparison of two charts, the two figures showed similar trends. The statistical indicators that there was a strong correlation between the elevation curve and the information entropy curve. The validation by erosion modulus showed that the information entropy was reliable in representing the topographic changes or erosion.[Conclusion] Terrain information entropy can be used to simulate the terrain, and the simulation results are farorable, it can be used to evaluate the landscape types.