The invention discloses a milkvetch and forage type tall fescue interplanting stereo cultivation method. The method comprises the steps of 1, land selection and preparation, wherein arch high ridges are made on a selected and plowed land parcel, the edges of the ridges are separated with hollow bricks, and then water and fertilizer troughs are dug in the middles of the ridge surfaces along the ridges; 2, soil pretreatment and fertilizer application; 3, seed pretreatment; 4, sowing; 5, field management; 6, pest and disease control; 7, harvesting. According to the milkvetch and forage type tall fescue interplanting stereo cultivation method, staggered type stereo space is formed by making the arch high ridges and closing the ridges with the hollow bricks, the stability of the ridges is ensured, and the growth space of the root systems of milkvetch is ensured; the water and fertilizer troughs are dug in the high ridges, the nutrition demands of milkvetch for growth are ensured, and water and fertilizer waste can be avoided; meanwhile, compounded base fertilizer is applied in the water and fertilizer troughs to regulate the pass-through degree and the water and fertilizer content of soil, the emergence rate of milkvetch is increased, the growth speed is increased, the yield is increased, and the quality is improved.