To solve the problem of a knock member of a knock type applicator wherein a weld line as molding failure and defective such as blur due to gas are conspicuous on the top face as a knock face to impair the beauty, and cause bad feeling of a fingertip in knocking.

In this knock member 15 of a knock type applicator, a coating liquid is suitably supplied by the rear end knock operation. The knock member is formed by a cylindrical body whose top part is closed, and which is provided with a thick part 158 at the rear part. In the thick part of the cylindrical body, a recessed part 161 is provided on the outer wall in the vicinity of a gate part to form a thin part. At the initial stage of filling resin from a gate of a mold, flow of resin and pressure are transmitted with priority to the knock top face which a knock part 151 of the cylindrical body by a difference in thickness between the thin part and the thick part.