Abstract: The research method: This paper considered the comprehensive benefit of intensive use of cultivated land, and selected 15 indexes from four aspects: input intensity, utilization degree, output benefit and sustainable condition. The methods of entropy weight and mean variance decision were used to determine the index weight synthetically, and the evaluation of intensive utilization of cultivated land was constructed. The system of spatial and temporal variation of cultivated land intensive use level in Northern Jiangsu from 2000 to 2015 were analyzed, and the GWR model was used to analyze the influence factors. The purpose of this study was to explore the level of intensive use of cultivated land and its changing trend in Northern Jiangsu Province, and to seek the mode of saving and intensive use of cultivated land as a reference for alleviating the contradiction between people and land, and guaranteeing the national food security. The results and conclusions were as follows:(1) from the overall level of intensive use of cultivated land in Jiangsu Province from 2000 to 2015, the trend of the first rising and stable development were presented, and the change of time series could be divided into two different stages. （2）The counties(cities) in Northern Jiangsu were mostly in the middle and high intensive use level and high level. The state of the Central Jiangsu area had improved, but most of the counties(cities) in the Southern Jiangsu maintained the level of low intensive use or not even intensive level. Overall, the intensive use level of cultivated land in Jiangsu showed the spatial distribution characteristics of the north and the south.(3) GWR can scientifically and accurately analyze the factors affecting the intensive use of cultivated land. The results showed that the intensity of input was the most important factor affecting the intensive use of cultivated land in Jiangsu Province from 2000 to 2015, followed by the continuous situation, and the extent of the impact of the utilization degree had obvious spatial and temporal difference, and the effect of output benefit was increasing gradually.