Abstract: A glass fiber reinforced polycarbonate composite material, a preparation method and an application thereof; the material includes the following components: component A: 40 parts to 90 parts of a polycarbonate; component B: 1.5 parts to 50 parts of a polysiloxane block copolymer; component C: 5 parts to 60 parts of a glass fiber; component D: 0.1 parts to 30 parts of a phosphorus-containing compound; and component E: 0.01 parts to 30 parts of a polyolefin compound.

Abstract: The present application is related to a polycarbonate composition, including 100 parts of a polycarbonate in parts by weight; wherein based on a total weight percentage of the polycarbonate, the polycarbonate consists of 10% to 40% of a first polycarbonate with a weight average molecular weight of 18,000 to 25,000, 20% to 60% of a second polycarbonate with a weight average molecular weight of 27,000 to 35,000, and 20% to 60% of a third polycarbonate with a degree of branching of 2 to 7 and a weight average molecular weight of 25,000 to 30,000. The polycarbonate composition has the advantages of high transparency, good extrusion melt uniformity, etc.