Disclosed herein is a membrane switch sheet for a switch matrix-type key input apparatus. The membrane switch sheet is used in a switch matrix-type key input apparatus, including a plurality of switch contacts, so as to prevent the occurrence of a ghost key phenomenon. The membrane switch sheet includes at least one film wired through a single patterning process using only ink having low conductivity so as to have resistors having a same resistance value, with distances between start points of lines of a switch matrix in a column scan direction and the switch contacts being set to the same value.