PROBLEM TO BE SOLVED: To provide a golf putter practice machine with which desired undulation is obtained more easily than with a conventional practice machine. SOLUTION: A plurality of tubes 11 to 15 are arrayed along a putter course and an artificial lawn mat 20 is placed on the tubes 11 to 15 so as to constitute the machine. A plurality of fastening means (fastening belts 60) are attached to the respective tubes 11 to 15 at intervals in the longitudinal direction, a diameter is partially contracted in at least one tube by 1 or >=2 fastening means and, then, the undulations are formed on the front surface of the artificial lawn mat.
