PROBLEM TO BE SOLVED: To provide a guide system for an agricultural implement capable of more appropriately guiding an operation of an implement mounted on a tractor and capable of performing a forward operation and a backward operation.SOLUTION: In a system for guiding an implement mounted on a tractor for performing agricultural work, the implement 50 can be changed at least to a forward operation state and to a backward operation state. Based on the information of position detection means 11, movement distance detection means 12, stop detection means 12, direction detection means 13, posture detection means 12, and operation state detection means 14 and 15, a control unit 20 causes a display unit 26 to display a guide on an operation from a forward operation completion position to a backward operation start position.SELECTED DRAWING: Figure 1