Objectives The techniques of planting forage grass under walnut forests were studied and popularized to promote the development of herbivorous animal husbandry in Baoshan City, Yunnan Province. Methods The common local varieties of forage grass were selected to design operations of planting forage grass under walnut forests in multiple combinations including mixed planting with perennial variety combination (Glomerat Dactylis a L.+ Lolium perenne Linn.+Trifolium repens L, Festuca arundinacea Schreb.+Lolium perenne Linn.+Trifolium repens, Festuca arundinacea Schreb.+Paspalum notatum Flugge + Trifolium repens L), monoculture with perennial tall grass (Sorghum Pennisetum × Pennisetum giganteum z.x.lin), 1 year and 2 seasons rotation (Sorghum hybrid sudangrass and Sorghum sudanense (Piper)Stapf. in the summer and Avena sativa L., Triticale, and Secale cereale L. in the winter). The adaptability, production performance, and planting effects of each variety (or combination variety) were identified. Results The mixed planting of Dactylis glomerat a L.+ Lolium perenne Linn.+Trifolium repens L. resulted in a cumulative fresh weight of 92 796.45 kg/hm² over 3 years (hereinafter referred to as fresh weight). The fresh weight of planting Festuca arundinacea Schreb.+ Lolium perenne Linn. +Trifolium repens, Festuca arundinacea Schreb.+ Paspalum notatum Flugge + Trifolium repens L., Pennisetum×sineseand,Pennisetum giganteum z.x.lin did not meet the standards of measuring weight. The fresh weight of the rotation with Sorghum hybrid sudangrass and Sorghum sudanense (Piper)Stapf. did not meet the standards of measuring weight. The fresh weight of Avena sativa L., Ivor, Triticale, McMuffin, Secale cereale L. was 33 876.08, 50 145, 40 020, 28 132.5,24 764.25 kg/hm², respectively. Conclusions The mixed planting of Dactylisglomerat a L.+ Lolium perenne Linn.+Trifolium repens L. is suitable for being planted under walnut forests. The monoculture with Pennisetum × sinese and Pennisetum giganteum z.x.lin is not suitable for being planted under walnut forests. The recommended mode of rotation is fallow in summer and planting Avena sativa L. ,Triticale and Secale cereale L. in winter.