Disclosed is an intelligent seeding and fertilizing machine for intercropping, comprising: a fixed frame, a plurality of seeding devices arranged in parallel in the fixed frame and a plurality of guide columns fixedly connected in the fixed frame, where one end of fixed frame close to a cutting mechanism is provided with a lifting plate, a side of the fixed frame is in sliding contact with an inner wall of a lifting groove, the lifting groove is provided with a lifting screw, a lifting motor is fixedly connected to a top surface of the lifting plate; each seeding device includes a frame, and a bottom surface of the frame is respectively provided with a cutting mechanism, a cleaning mechanism, a furrowing mechanism, a fertilizing mechanism, a seeding mechanism and a soil covering mechanism, and the above mechanisms and the lifting motor are all electrically connected with a control system.