Maize is an important food crops in Jilin Province. The analysis of maize water footprint and its efficiency can effectively guide regional water resources management and promote the development of green agriculture. Based on the data provided by CLIMWAT 2.0 and China Meteorological Data Network, CROPWAT 8.0 software is used to calculate the water footprint and efficiency of maize in Jilin Province from 2005 to 2016, and the following conclusions are drawn:（1） The water footprint of maize in Jilin Province fluctuated slowly, and the main influencing factor was maize yield per unit.（2） The percentages of green water footprint, blue water footprint and gray water footprint of maize were 55.10%, 15.65% and 29%, respectively.（3） The regional difference of maize water footprint was obvious, and the proportion of blue water footprint and gray water footprint was up to 35% and 31% respectively.（4） The water footprint efficiency of maize decreased slowly on the whole, and the water use efficiency increased continuously, but there was still a large room for improvement. Therefore, Jilin Province corn planting should adjust measures to local conditions, attach great importance to rational development and utilization of water and soil resources.Support by science and technology, increase maize yield per unit. Appropriately reduce nitrogen fertilizer dosage and improve nitrogen fertilizer utilization rate. And we should guide the maize planting structure adjustment, and promote comprehensive benefits in Jilin.