To provide the moving image processor of a guidance device, the target tracing system of the guidance device and a target tracing method in the moving image processor of the guidance device for storing the corresponding relation of the label of the tracing target of the previous frame and the label of the tracing target of this time frame even when a plurality of objects including the tracing target are connected in the previous frame.

This moving image processor of a guidance device is provided with a previous tracing target table in which the label of the tracing target of the previous frame is stored, and only the label of the tracing target of the previous frame corresponding to the tracing target of the present frame is stored in the table to be associated with the label of the tracing target of the present frame.

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