The invention provides a lens blank manufacturing method which can produce the lens blank in the expected shape even by a large-scale lens blank, and a manufacturing method which can produce the lens in the expected shape by the lens blank manufactured according to the former method. An extrusion molding die including a molding surface of a main surface of the lens blank (1) is used to perform extrusion molding to the glass which is in a soft state and has higher temperature than the extrusion molding die via heating, thereby transfer-printing the molding surface on the main surface of the lens blank, and transfer-printing a convex part and/or a convex part provided on the molding surface in a way of admittance that only exists on the main surface of the lens blank and is eliminated through secondary processing, so as to improve cooling of the lens blank.