The invention discloses a method for manufacturing a non-plugging metalized
blind hole, which comprises the following steps of: 1, taking a first
daughter board and a second
daughter board, drilling a first hole in the second
daughter board, sequentially plating a metalized
copper layer, a
gold plating layer and an additional
copper plating layer on the surface of the first hole, and plugging resin; 2, manufacturing a circuit on the second daughter board; 3, laminating the first daughter board, the prepreg and the second daughter board to form a mother board; 4, drilling a second hole in the mother board, performing
copper deposition treatment on the second hole, and plating copper on the surface of the mother board; 5, manufacturing a circuit on the mother board; 6, plating
tin layers on the surfaces of the mother board and the second hole; 7,
alkaline etching and back drilling are carried out on the mother board obtained in the step 6 to remove the resin; 8, performing external light imaging on the mother board obtained in the step 7 to
expose the first hole; step 9, carrying out
alkaline etching on the mother board obtained in the step 8 until the gold-plated layer in the first hole is exposed; and 10, removing the dry film used for external light imaging in the step 8.