PROBLEM TO BE SOLVED: To provide a working machine which can disseminate and furrow crops to proper positions while arranging a state of a farm field so that the crops are properly grown.SOLUTION: A working machine which disseminates seeds and forms ridges along a back-filled groove T formed by grooving a farm field comprises: compaction means 41 for compacting the soil of the back-filled groove T a tiller 30 for tilling the outside of the compacted groove T a disseminating device 60 for disseminating the seeds so as to be positioned in the compacted groove T and a ridge forming machine 50 for forming ridges while soil-covering the disseminated seeds. The compaction means 41 is arranged in front of the tiller 30, the compaction means 41 is constituted so as to be accommodated in the back-filled groove T, and the compaction means 41 is constituted so as to be vertically movable.
