PROBLEM TO BE SOLVED: To provide a farming field ditching machine which enables: advancing operation of the machine body on a farming field by a rotation of a spiral propeller shaft back-and-forth operation of the machine body on the farming field by forward and reverse rotation of the spiral propeller shaft and ditching operation between a plurality of planting rows or seedlings by remote control of a rotational driving mechanism to advance the machine body so that a ditching part ditches the field, thereby reducing burden of an operator and improving ditching operability.SOLUTION: A machine body 1 includes: an advancing mechanism 4 having a driving power source 3 and a ditching part 2 that forms a drain ditch W on a farming field M. The advancing mechanism includes: a rotatably-provided spiral propeller shaft 5 having a mud-scraping spiral blade 5a on an outer circumference thereof, the rotational axis L of the spiral propeller shaft being in an advancing direction D of the machine body: a rotational driving mechanism 7 for rotationally driving the spiral propeller shaft and wireless control means 8 which enables remote control of the rotational driving mechanism 7.
