The invention discloses a high-quality and high-yield garlic cultivation technique, and particularly relates to the technical field of garlic cultivation techniques, which comprises the following specific steps: S1, preparing before sowing; S2, performing land selection and soil preparation; S2.1, plowing the land; S2.2, furrowing; S2.3, applying and spraying a base fertilizer; S3, sowing the seeds; S4, performing field management; S4.1, watering; S4.2, topdressing; and S4.3, performing disease and pest control. According to the method, in the land selection and soil preparation process, the soil is deeply ploughed by 40-50 cm, the deep soil can be turned to the surface layer, and parasites such as garlic maggots often live in the surface layer soil, so that the soil which does not contain parasites and is deep underground can be turned to the surface layer for planting, and then the insect repellent liquid containing natural components such as mint, plant ash and dandelion is sprayed; the insect repelling effect of natural plants is utilized, the harm of garlic maggots is reduced, the yield of garlic is increased, and meanwhile, the adverse effect of traditional chemical insect repelling on garlic is avoided.