The invention discloses a deep loosening, fertilizing and ridging integrated machine. The machine comprises a rack mechanism, fertilizing mechanisms, a deep loosening mechanism, a ridging mechanism and a walking mechanism; the rack mechanism comprises a three-point suspension, two fertilizer box racks, a main rack, four support rods and support rod mounting sleeves, wherein the three-point suspension is fixedly installed at the center of the outer wall of the top of the main rack, and the two fertilizer box racks are fixedly installed at the two ends of the outer wall of the top of the main rack respectively. The machine can complete ploughing and soil preparation operation of two ridges at the same time during one-time straight driving, so that the one-time ploughing operation amount is reduced; the symmetrical fertilizing mechanisms on both sides are connected with a spiral blade rotating shaft through two couplers, the one-way thrust caused by spiral blades is offset, and a negativeacting force which damages the balance of a device is converted into a positive acting force which maintains the balance of the device, so that the structure of the machine is more reasonable, the fertilizer discharge effect is more stable, and the creativity of the device is improved.