A condenser for a low-beam vehicle light module made from transparent plastic or resin, comprising light condensing structures, a cut-off line forming structure, a 50L dark area forming structure, a zone III forming structure, a SEG10 luminance reducing structure and condenser installation structure, characterized in that: the condensing structures are disposed at a rear end of the condenser, namely an LED light source end; the cut-off line forming structure has an end, with an arc-shaped end face contour curve, close to a lens and is disposed at a front end of the condenser; the SEG10 luminance reducing structure is a protrusion with a sloped section and is disposed at a bottom of the condenser, and the light irradiated on the SEG10 luminance reducing structure is reflected and refracted, so as to correspond to a legally-required SEG10 test zone of a low-beam light shape, so that luminance of the SEG10 zone is prevented from being too high; the zone III forming structure is disposed at the bottom of the condenser, located at a front end of the SEG10 luminance reducing structure, the zone III forming structure comprises a zone III breadth forming structure and an HV luminance reducing structure; the zone III breadth forming structure is in a shape of a sheet attached to the bottom of the condenser; and is used for forming a breadth of the low-beam light shape, and light shining on the HV luminance reducing structure is reflected and refracted by the HV luminance reducing structure so as to reduce luminance of a test point HV of the light shape in zone III; the 50L dark area forming structure is disposed at the bottom of the condenser and makes luminance of a 50L area in the low-beam light shape controllable; and the 50L dark zone forming structure is an inward triangular protruding structure perpendicular to a light spreading direction. the condensing structures are disposed at a rear end of the condenser, namely an LED light source end; the cut-off line forming structure has an end, with an arc-shaped end face contour curve, close to a lens and is disposed at a front end of the condenser; the SEG10 luminance reducing structure is a protrusion with a sloped section and is disposed at a bottom of the condenser, and the light irradiated on the SEG10 luminance reducing structure is reflected and refracted, so as to correspond to a legally-required SEG10 test zone of a low-beam light shape, so that luminance of the SEG10 zone is prevented from being too high; the zone III forming structure is disposed at the bottom of the condenser, located at a front end of the SEG10 luminance reducing structure, the zone III forming structure comprises a zone III breadth forming structure and an HV luminance reducing structure; the zone III breadth forming structure is in a shape of a sheet attached to the bottom of the condenser; and is used for forming a breadth of the low-beam light shape, and light shining on the HV luminance reducing structure is reflected and refracted by the HV luminance reducing structure so as to reduce luminance of a test point HV of the light shape in zone III; the 50L dark area forming structure is disposed at the bottom of the condenser and makes luminance of a 50L area in the low-beam light shape controllable; and the 50L dark zone forming structure is an inward triangular protruding structure perpendicular to a light spreading direction.