Wildflower strips—diverse plant mixtures established along field margins—have been widely adopted worldwide as a representative and effective method for restoring biodiversity and ecosystem functions in agricultural landscapes. However, the characteristics linking community assembly of wildflower strips to ecosystem service outcomes remain poorly understood. In this study, we compiled a global database of wildflower strip designs, synthesizing data from 84 studies encompassing 161 wildflower strip cases. We systematically reviewed community assembly strategies under varying characteristicsecosystem service objectives and analyzed the functional traits of plant species of different functioning wild strip. Our results indicate that wildflower strips globally encompass 473 species from 265 genera and 43 families, with pronounced regional differences in community composition. Strips targeting pollination services and those implemented in Europe exhibited the highest levels of biodiversity. At the β-diversity level, we found no significant differentiation among wildflower strips designed for different ecosystem services. Regionally, taxonomic differentiation increased progressively from family to genus to species level, a pattern reminiscent of processes driven by free dispersal and niche differentiation. Species origin, functional traits, and functional diversity emerged as the primary drivers for wild strip vegetationcommunity composition construction, together explaining more than 50% of variation in both α- and β-diversity across taxonomic levels. Selecting species with distinct functional traits to ensure high functional diversity across trait axes appears to be a key strategy for optimizing ecosystem service provision in wildflower strips. This study reveals the composition characteristics and underlying drivers of wildflower strip community assembly in complex agricultural landscapes. Our findings provide scientific evidence and practical guidelines for implementing wildflower strip technology in ecological restoration and landscape design in China and beyond ,and also offering theoretical support for optimizing agroecological restoration techniques, promoting sustainable agriculture, and achieving synergy between biodiversity conservation and agricultural productivity.