The utility model discloses a multipath light combining component, which comprises a first prism, a second prism and an optical glass body, the inclined plane of the first prism and the inclined plane of the second prism are connected to two ends of the optical glass body to form a cuboid, a polarization light splitting membrane is respectively provided on two inclined planes, the first prism has a first surface and a second surface which are mutually perpendicular, the second prism as a third surface and a fourth surface which are mutually perpendicular, wherein the fourth surface and the second surface are arranged face to face; a first 1/4wave-plate is arranged parallel to the first surface, a second 1/4wave-plate is arranged parallel to the second surface, a third 1/4wave-plate is arranged parallel to the third surface, and a high reflection film is plated on the first 1/4wave-plate. The multipath light combining component has small volume and convenient usage, which can easily realize a purpose that multipath lights with different wavelengths combines a bundle.