Ecological protection and high quality development is an important national strategy in the Yellow River basin， and ecological integrity assessment is an important means of resource management and environmental protection. From the perspective of landscape ecology， this paper originally evaluate the Landscape Ecological Integrity of Taiyuan in five years （2000， 2005， 2010， 2015 and 2019） using ArcGIS software and statistical analysis software to GS + 9.0， analyze the spatio-temporal dynamics and spatial variation of Landscape Ecological Integrity. Furthermore， the temporal and spatial variation laws of landscape ecological integrity were revealed， which provided the basis for landscape ecological construction and landscape ecological planning in Taiyuan. The findings indicated that：①The LEI of Taiyuan is relatively low and in dynamic change on the whole. From the perspective of the entire city， the LEI of Taiyuan is in a dynamic change. From 2000 to 2019， the LEI can be divided into three stages；②From 2000 to 2019， the area was dominated by medium integrity. From the perspective of spatial distribution， the southeastern plain area and the urban area all in the low value range；③From 2005 to 2010 and from 2015 to 2019， there are two main stages of variation， and both of them are mainly transformed from low to medium integrity；④The overall spatial heterogeneity of LEI is relatively low in Taiyuan， which is mainly caused by spatial auto-correlation factors.