Agricultural seeding machine with seed screening and removing structure and use method of agricultural seeding machine

The invention discloses an agricultural seeding machine with a seed screening and removing structure and a using method thereof.The agricultural seeding machine comprises a material box, a sorting machine is installed at the top end of the material box, supporting blocks are installed on the left side and the right side of the material box correspondingly, a frame assembly is welded to the lower surfaces of the supporting blocks, and rolling wheels are installed at the power end of the frame assembly; and clamping pieces are fixedly connected to the left side and the right side of the back face of the cross beam of the frame assembly correspondingly. According to the agricultural seeding machine with the seed screening and removing structure and the using method thereof, sieved fertilizer is discharged into an inner cavity of a material box through a discharging box, the fertilizer is discharged through a discharging connecting base arranged at the position of a built-in inclined plate, the discharged fertili