In the tape attaching method of cutting a tape member into conductive tape pieces and attaching the conductive tape pieces onto a plurality of attachment regions which are formed at a side edge part of a board, an attaching step in which the conductive tape pieces is attached onto the attachment region of a first press position, and a moving step, in which by driving a tape sending mechanism to perform the operation of sending the tape member while a press bonding head and a peeling unit are integrally moved relative to the board, the press bonding head is aligned with the attachment region of a second press position, and a separator is peeled from the tape member attached onto the first press position by the peeling unit during the relative movement, are repeated.