The invention discloses a high-standard agroforestry construction method suitable for a plain area. The high-standard agroforestry construction method comprises forest network structural configuration and forest belt mode configuration, wherein a forest belt direction is integrally planned according to fields, forests, roads and water bodies, and an east-west rectangular grid is formed according to the directions of ditches, trenches, roads and dykes; the row number of the forest belt is 2-4, the plant line space is 2-4m*2-5m, the gap of the main forest belt is 200-350m, the forest height of trees of the main forest belt is 15+/-1m, and the gap of an auxiliary forest belt is 500-600m; a sparse structure with the sparseness degree of 0.15-0.45 is formed by using a planting manner in triangle form, mixed planting of arbors and shrubs and tending management; and the ratio of the mixed planting of arbors and shrubs is 2:1-4:1. Through reasonable forest belt mode configuration and forestry network structural configuration, a high-standard agroforestry constructed by the invention has desired sparseness or ventilation structure, and can not only reduce land occupation of the forest belts effectively but also improve the protective efficiency of the agroforestry in the plain area.