PROBLEM TO BE SOLVED: To provide a cultivation plan management system and a cultivation plan management method which are capable of reducing labor required for recording work performance.SOLUTION: A cultivation plan management system includes first storing means, registering means and display means. The first storing means stores cultivation plan data showing a cultivation plan in which work required in cultivating field crop is set for each type of field crop. The registering means registers performance data showing that the work set as a cultivation plan shown by cultivation plan data is executed. The display means displays the cultivation plan shown by the cultivation plan data on a display together with the registered performance data.SELECTED DRAWING: Figure 4