The utility model belongs to a crop sowing machine, which is used by being equipped on a tractor, comprising a frame 1, an earth wheel 18, a sowing device 11, a seed box 13, a digger plough 20, a hanging object 14 and a driving mechanism 16, wherein the frame 1 is a frame structure, a ridge supporting device 3 is equipped under the frame 1, the middle portion of the frame 1 is respectively equipped with a driving shaft 5 and a passive shaft 9, the driving shaft 5 is equipped with the earth wheel 18 and a chain wheel 4, the passive shaft 9 is equipped with a chain wheel7 and a chain wheel 8, the a chain wheel 4 can be connected with the a chain wheel 7 by a chain 6, the a chain wheel 8 is connected with a chain wheel 12 of the sowing device 11 equipped on the frame 1 by the chain 10, the left side of the sowing device 11 is equipped with the seed box 13, and the right side is equipped with a ditch plough 20. The utility model has simple structure, convenient usage, easy maintenance, which is suitable for the demands of different kinds of seed sowing.