Based on field survey and three stages of spatial data sampled in the Yellow River Delta from 1978 to 2002,the transition of spatial data is accomplished by using the software ArcGIS and performing spatial analysis.Through the analysis of landscape indexes,the spatial and temporal changes in landuse pattern and the influence by human activities are contrasted.The result shows that in the Yellow River Delta,farmland is the primary landuse type,and wetland also possesses a great proportion.Affected by the natural factors and human activities,a series of changes has taken place on landscape pattern.The fragmentation and diversity of landscape structure have been increased obviously,and also the equality distribution of landuse pattern has been improved.