A ground trough digging device for agriculture comprises a support plate, a first rolling wheel device, a trough digging device, a second rolling wheel device, a cylinder device, a counterweight device and a pushing device; the support plate is provided with a rectangular hole, and the first rolling wheel device comprises a first supporting block, a first rolling wheel and a first triangular block; the trough digging device comprises a hook, a first fixing block, a first rotating rod, a rotating shaft, a first support, a first oblique rod, a first spring, a second oblique rod and a second spring; the second rolling wheel device comprises a second supporting block, a third supporting block, a second rolling wheel, bristles, a fourth supporting block, a third rolling wheel and a first connecting rod; the cylinder device comprises a cylinder, a pushing rod, a second connecting rod, second triangular blocks and a second support; the counterweight device comprises a first fixing frame, a second fixing frame, a counterweight and third triangular blocks; the pushing device comprises a first vertical rod, a first cross rod and a second cross rod. By means of the ground trough digging device for the agriculture, small trough digging operation can be conducted during agricultural sowing, operation is easy, and the trough digging efficiency is high.