This invention relates to a film transistor structure and a manufacturing method for LCD base plates, in which, the method includes: a, providing a base plate, b, forming a penetration layer with multiple grooves on the surface of the base plate, c, forming a first blocking layer on the surface of the grooves, d, filling a first metal layer on the blocking layer to let the surface of the first metal layer at the same plane of the surface of the photic layer, e, forming a first insulation layer and a semiconductor layer orderly, f, forming a pattern second metal layer and exposing part of the semiconductor layer to form a drain structure and a source structure of a film transistor and g, forming a transparent conduction layer on part of the photic layer and second metal layer surface of the drain structure. |