The invention discloses a pultrusion type embedded blade root connector for wind-driven generator blades and a preparation method thereof. The pultrusion type embedded blade root connector comprises blade root connector bodies (1-1), a light connector body (1-4) connected to the blade root connector bodies (1-1), light material (1-3) filling the light connector body (1-4), and a pultrusion type composite material part (1-2) wrapping the peripheries of the blade root connector bodies (1-1) and the periphery of the light connector body (1-4). The pultrusion type preparation method comprises the steps of part assembly, embedded type composite material pultrusion and finishing. The embedded blade root connector has the advantages that the appearance size is stable, the defect rate of products is low, the quality is continuously stable and reliable, locating is accurate, interfaces between different kinds of material are firmly bonded, and the mechanization level is high. The preparation method has the advantages that the time of occupying molds by the products can be shortened, the time of laying material can be shortened, the time of installing bolts can be shortened, the time of pouring and curing can be shortened, the production efficiency is high, and the labor cost is low.