The invention provides a mowing and soil loosening device for agriculture and relates to the field of agricultural equipment. The device comprises a vehicle body, a supporting column is fixedly mounted on the left side of the top of the vehicle body, a handle is fixedly mounted at one end of the supporting column, a grass collection box is fixedly mounted on the right side of the supporting column, first retractable rods are fixedly mounted on the top of the vehicle body, a transverse rod is arranged on the upper side of the vehicle body, the two ends of the transverse rod are fixedly mountedon one sides of the first retractable rods respectively, and a first sliding slot is formed in the transverse rod. According to the mowing and soil loosening device for agriculture, through the firstretractable rods, the height of the transverse rod can be adjusted, and correspondingly height adjustment of a mowing cutter is achieved; through a second motor, a driving wheel can be driven to rotate, scraping blades are driven to rotate, and soil after mowing can be loosened; through arrangement of an exhaust fan, in the mowing process, the exhaust fan runs, and grass cut off by the mowing cutter is sucked into the grass collection box through a grass suction pipe for storage, so that the crushed grass is prevented from polluting the environment, manual cleaning is not needed, the labor ofan operator is reduced, and time and effort are saved.